Malicious PDF — malware analysis report

Static analysis result for SHA-256 60482f0357dc34ad…

MALICIOUS

PDF

84.8 KB Created: 2021-07-06 19:23:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 8762f7fdd1e7a50a33cf16c4623500b5 SHA-1: f461beccb43b3fd748514b8c38008dcd192ffa66 SHA-256: 60482f0357dc34adc4053d4e09b201136b7c475aeb6dd5e3cf85f4356fe604c3
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous external links, many hosted on compromised websites or disposable domains, indicating a link farm designed to lure users to malicious content. The ClamAV detection and ML classifier strongly suggest malicious intent, likely phishing or malware distribution. No scripts were extracted, but the structure and URL patterns are consistent with a malicious PDF dropper.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9951

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 https://allytemp.ru/uplcv?utm_term=gas+laws+examples+in+real+life PDF link annotation
    • https://vibangnhadat.com/uploads/files/silibetavomidedovagabuwa.pdfIn PDF document text
    • http://grupogmec.com/wp-content/plugins/formcraft/file-upload/server/content/files/160abf6468cdfa---gebekeruzejutuseviji.pdfIn PDF document text
    • http://big-blue-bus.com/pics/fotos/1/file/39496034927.pdfIn PDF document text
    • http://akvari-um.ru/userfiles/file/84095420778.pdfIn PDF document text
    • https://bouveau-consulting.com/userfiles/file/22985444922.pdfIn PDF document text
    • http://amandatravel.com/userfiles/file/silimevajikakifokigoguxa.pdfIn PDF document text
    • https://etre-cheval.fr/Applications/MAMP/htdocs/etre%20cheval/news_pix/file/kuvopirigabekavup.pdfIn PDF document text
    • http://vivo-mebel.ru/upload/file/13106172295.pdfIn PDF document text
    • https://sportli.co.il/wp-content/plugins/formcraft/file-upload/server/content/files/160830d098fd4b---vawofubero.pdfIn PDF document text
    • https://karapinarinsaat.net/userfiles/upload/file/62111237360.pdfIn PDF document text
    • https://belgradenightlife.info/wp-content/plugins/super-forms/uploads/php/files/d7mlnci6kcpbbrvlskf0ootn95/66853495862.pdfIn PDF document text
    • http://cgt-fo-csc.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160738fb44d00b---31291391688.pdfIn PDF document text
    • https://abe-rdc.com/userfiles/file/28744014321.pdfIn PDF document text
    • https://www.advids.io/wp-content/plugins/formcraft/file-upload/server/content/files/160805b3e4362e---watoletodirivipo.pdfIn PDF document text
    • https://www.accidentinjuryalbuquerque.com/wp-content/plugins/super-forms/uploads/php/files/cbfm907ojtm9na018jp3u51oe9/72875975592.pdfIn PDF document text
    • http://psn-monolit.ru/img_file/files/bedezirekigemojopagej.pdfIn PDF document text
    • http://pulsarvn.com/media/ftp/file/84572054271.pdfIn PDF document text
    • https://www.endthestigmacounselling.com/wp-content/plugins/super-forms/uploads/php/files/8ebbp34fb2874f7hepgqsl88pk/77437362451.pdfIn PDF document text
    • https://kompaspt1.com/contents//files/36842989075.pdfIn PDF document text
    • http://jshtextile.com/UserFiles/file///niwupudufogutigegik.pdfIn PDF document text
    • https://weblative.com/wp-content/plugins/super-forms/uploads/php/files/blr7v63nej61jgctj9q06anctu/19186679692.pdfIn PDF document text
    • http://utuin.net/files/fckeditor/file/laxutadeporowex.pdfIn PDF document text
    • https://rmdschoolandcollege.com/wp-content/plugins/super-forms/uploads/php/files/k30ofcnbqua8vffi44gfbge9t2/dofezukuju.pdfIn PDF document text
    • https://aquariumfargo.com/wp-content/plugins/super-forms/uploads/php/files/72d98b98603ba7a2a0a8fac0025cc047/72056618721.pdfIn PDF document text
    • http://sushi-belovo.ru/files/pepesevanadelojonupiveg.pdfIn PDF document text
    • 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eaf0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEAF0 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00010307.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10307 10528 bytes
SHA-256: b629e60be078d26969f4392e6ac16299fa78355e8ef9fdc2fbd594f62c0802f9
font_02_sfnt_off00011afd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11AFD 16656 bytes
SHA-256: bd77fe3609b4fc77833916e80cd41d994b53e4c185807337e6e9df57b921193d