Malicious PDF — malware analysis report

Static analysis result for SHA-256 07c823eae8a2b2fc…

MALICIOUS

PDF

90.8 KB Created: 2021-07-19 01:33:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-14
MD5: 0a18be839f8468f439633095493e7742 SHA-1: 503ab9cec4d058a26e0f1f044859f8ff5a353a9d SHA-256: 07c823eae8a2b2fceeb6c3d70d09b3c769848d9dd0347119b761ae8e7475db70
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF file was identified as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. The heuristics reveal it functions as a link farm, with many URLs pointing to compromised WordPress upload directories and disposable hosting. The embedded URLs and link farm structure suggest an attempt to lure users to malicious sites, likely for further exploitation or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9850

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://sjhtractor.com/d/files/gatelupepinakux.pdf In PDF document text
    • http://drshapard.com/clients/73598/File/voruforebovukepil.pdfIn PDF document text
    • http://www.birapart.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606d826355133---filopurigazazevarap.pdfIn PDF document text
    • http://intechsol.kz/wp-content/plugins/formcraft/file-upload/server/content/files/160ed189293506---9689631178.pdfIn PDF document text
    • http://yatros.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160a7c201d5c1c---damujusozajarutixaguf.pdfIn PDF document text
    • https://californiaoptionsrealestate.com/wp-content/plugins/super-forms/uploads/php/files/e040a395ae9d8a3e304ad6e922d651de/50364906085.pdfIn PDF document text
    • https://latework.cz/soubory/71917466840.pdfIn PDF document text
    • http://tksvolga.ru/userfiles/file/kokigosedarewagalo.pdfIn PDF document text
    • http://yongqingtech.com/d/files/jepegofut.pdfIn PDF document text
    • http://minhvuongthuphap.com/upload/ck/files/kivojilaxaravexatifufaga.pdfIn PDF document text
    • https://xn--80aaa1anac6cg.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/68e3a5ac9b5ce17acbcd95ce86379de3/tovodinisugisasefawuram.pdfIn PDF document text
    • http://aliancegroup.su/wp-content/plugins/formcraft/file-upload/server/content/files/160ba96cc5450c---74398012191.pdfIn PDF document text
    • http://begemot-rus.com/uploadfiles/file/2021061518490273499.pdfIn PDF document text
    • https://my-natural-style.net/upload/files/15611052556.pdfIn PDF document text
    • https://bettenbaehren.de/wp-content/plugins/formcraft/file-upload/server/content/files/160782b07e92e9---24738089720.pdfIn PDF document text
    • https://www.lindopoint.it/wp-content/plugins/super-forms/uploads/php/files/1aa5053f7bc9081af418319ec92ed324/xemegefiginenotisefob.pdfIn PDF document text
    • http://provia-events.de/pics/fotos/1/file/38910107544.pdfIn PDF document text
    • http://gleneaglehoa.org/images/file/dawuwafotiti.pdfIn PDF document text
    • http://amfmeg.org/wp-content/plugins/formcraft/file-upload/server/content/files/160a14033487c1---26443150682.pdfIn PDF document text
    • https://rittenhousesmiles.com/wp-content/plugins/super-forms/uploads/php/files/085103f4a0f5e57f61a2c71db1d7b5fa/julifiludogo.pdfIn PDF document text
    • https://amezdigital.com/wp-content/plugins/super-forms/uploads/php/files/3f9a503bd30e8f92121509bd0d455088/lolepuvax.pdfIn PDF document text
    • https://encoregallery.us/wp-content/plugins/super-forms/uploads/php/files/64a97cae15cee040d5b994651ed6eccb/goxufusogiravami.pdfIn PDF document text
    • https://www.booster-p.com/wp-content/plugins/formcraft/file-upload/server/content/files/160728e485183e---24776786612.pdfIn PDF document text
    • http://jonme.net/ckupload/files/88197647113.pdfIn PDF document text
    • https://mymovingestimate.com/wp-content/plugins/super-forms/uploads/php/files/d1064e06af649e5c378c9dbd512298bf/49388679523.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/GLLx1DTH0VQ/uplcv?utm_term=the+thinning+torrentPDF link annotation
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dafb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDAFB 19576 bytes
SHA-256: 1894a65c4e0c089e17f59d06b98c090e065dcb0d447b626183ce1c85e4fe0689
font_01_sfnt_off00010b35.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B35 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0001234b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1234B 9972 bytes
SHA-256: 250f54ec36ad488c5c5b4873705c45fa137e1543acd33127171585221282955b
font_03_sfnt_off0001394e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1394E 16076 bytes
SHA-256: 27498b4d8460feb872b58f91270d48211bd9cddb3b9e02a16bfd3efc1c10ae72
font_04_sfnt_off00014e70.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14E70 3588 bytes
SHA-256: 6c4bf4a01883caf357204d0f32c9fb559e7f4dc431b18fb2acc19d6dd42b0bac

Open this report in the interactive analyzer, or submit your own file for analysis.