Malicious PDF — malware analysis report

Static analysis result for SHA-256 ee5e77ae36d1bc40…

MALICIOUS

PDF

80.2 KB Created: 2021-07-29 09:15:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: 20a590c1e532fa35ff33d3d1619bf571 SHA-1: dff1b8bc845bdaae26477420d3111b3c52778345 SHA-256: ee5e77ae36d1bc4015b512fe19341ad131301e19863fd018af7b7e827c763220
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file is a PDF containing multiple links, some pointing to compromised WordPress sites, suggesting a link farm or phishing lure. The presence of a 'download button' heuristic and ClamAV detection further indicates malicious intent. While no scripts were explicitly extracted, the PDF structure and linked URLs are indicative of a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9975

Heuristics 7

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://timandlor.com/userfiles/file/timobikejogoritilisu.pdf In PDF document text
    • http://hellnocancershow.com/wp-content/plugins/formcraft/file-upload/server/content/files/160961c0e981e4---kavinikogumodexepele.pdfIn PDF document text
    • http://www.jhannahs.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ac7b5e4e5a9---52223791355.pdfIn PDF document text
    • http://drinkandshrink.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160718df24091a---514784717.pdfIn PDF document text
    • http://www.mtpartnersfl.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a5b73bb2896---xusodonerenaduzaxokupit.pdfIn PDF document text
    • http://lalitas-thaimassage-spa.de/wp-content/plugins/formcraft/file-upload/server/content/files/1609ab43464604---tezewevirinoredag.pdfIn PDF document text
    • http://www.olympussverige.se/wp-content/plugins/super-forms/uploads/php/files/0nt4frm52791v4iemn6mi7d9pd/44220778146.pdfIn PDF document text
    • http://eurekaelearning.com/upload/news/file/buvoxorolev.pdfIn PDF document text
    • http://festivaldeliteraturadepereira.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607f0dacd6819---dozesujokilimujur.pdfIn PDF document text
    • http://shinex-auto.com/userfiles/file/bagijanekirapedulam.pdfIn PDF document text
    • http://www.justgiveahand.org/wp-content/plugins/formcraft/file-upload/server/content/files/160849a622d0ec---vanusevokepelijav.pdfIn PDF document text
    • https://empylean.com/wp-content/plugins/super-forms/uploads/php/files/p1k5cc5uraanq26ndl8906d6hb/nizage.pdfIn PDF document text
    • https://suksesunited.com/contents//files/limonanazixisisagaxidefu.pdfIn PDF document text
    • https://benqmusicworkshop.com/fupload/file/pidaroworavotorizuwive.pdfIn PDF document text
    • https://gymlesgeants.com/upload/editor/file/gilesixakiwebaforutipiku.pdfIn PDF document text
    • https://wamsconference.com/wp-content/plugins/super-forms/uploads/php/files/8dc9bd9e0dc202449327bb5118a67136/mojivirapepejewet.pdfIn PDF document text
    • https://arichaindia.com/userfiles/file/wumizodisija.pdfIn PDF document text
    • https://thewentworthco.com/wp-content/plugins/super-forms/uploads/php/files/vjuf50d51mm9osc4240ssu14ul/guzajazabobux.pdfIn PDF document text
    • http://divapharma.com/uploaded/file/13958175950.pdfIn PDF document text
    • http://kingspec.su/wp-content/plugins/super-forms/uploads/php/files/aqeubrnoko9bi6bf3h0jkbf9m2/28897377766.pdfIn PDF document text
    • https://chornakorn-packing.com/ckfinder/userfiles/files/82696242072.pdfIn PDF document text
    • http://kirks-pool.com/wp-content/plugins/formcraft/file-upload/server/content/files/16083e66e39cb5---51723059340.pdfIn PDF document text
    • http://capitolmetrophysicaltherapy.com/userfiles/file/jibolirezevuzabexewotike.pdfIn PDF document text
    • http://clubmaniacr.com/campannas/file/85046153017.pdfIn PDF document text
    • https://cornwallstaffagency.com/userfiles/file/suwiwafexemaliwamepikemot.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/LPIa9PGmDLg/uplcv?utm_term=breakin+2+electric+boogaloo+t%C3%A9l%C3%A9chargerPDF 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d332.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD332 10900 bytes
SHA-256: 93e42b2f422b13426a927899b34b6cbb253aa8dc4b844c802b1704cdeb84397b
font_01_sfnt_off0000ec22.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC22 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00010434.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10434 17060 bytes
SHA-256: d3c9f7be8aa9c3c1ec4fa02734b3c6081f9eb0ef02533428fd348236c198f3bd