Malicious PDF — malware analysis report

Static analysis result for SHA-256 f06dc8077d74f838…

MALICIOUS

PDF

95.7 KB Created: 2021-09-17 00:45:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-29
MD5: 9247d659ad0a93ab0805c4756fdf0ea2 SHA-1: e3d795aa114debe9b43ca8a5173e5e515f4b5264 SHA-256: f06dc8077d74f838ecfa2211acdbcd1f346574a2f56bc1568b3fe05658e25fb5
146 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by ClamAV and an ML classifier. It uses a callback-phone (TOAD) lure. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9965

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
  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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://pistant.ru/uplcv?utm_term=jay+shetty+think+like+a+monk+pdf+free PDF link annotation
    • http://bagiez.de/userfiles/file/lujopudurum.pdfIn PDF document text
    • https://biroestarsa.hu/uploads/file/69188006793.pdfIn PDF document text
    • https://minjar.mebel18.com/uploads/files/juminoromudedo.pdfIn PDF document text
    • http://retrievers.su/ckfinder/userfiles/files/nasaxa.pdfIn PDF document text
    • http://roycraft.ca/userfiles/file/56542274206.pdfIn PDF document text
    • https://rescue.bg/wp-content/plugins/formcraft/file-upload/server/content/files/1613c5957531a2---dazagarebinefaxuvig.pdfIn PDF document text
    • https://lordoptika.hu/files/files/34111913651.pdfIn PDF document text
    • http://proficlim.ru/public/userfiles/file/leragoxuvitoget.pdfIn PDF document text
    • http://on-video.com/movies/movie_data/file/9296340926.pdfIn PDF document text
    • http://parilka.by/var/upload/file/gorel.pdfIn PDF document text
    • https://www.traitagri-solutions-alternatives.fr/ckfinder/userfiles/files/70425257472.pdfIn PDF document text
    • https://cvsc.co/userfiles/file/9899631719.pdfIn PDF document text
    • http://maiodi.com/userfiles/files/58941503099.pdfIn PDF document text
    • http://wirtrauenuns.ch/images/file/wawuxezafoledamij.pdfIn PDF document text
    • https://futurefacesmiami.com/uploads/file/3834929804.pdfIn PDF document text
    • https://actaviaserica.org/board/file/files/ponizixawadexamebomeneve.pdfIn PDF document text
    • http://ahdongjiu.com/upload_fck/file/2021-9-14/20210914143217295719.pdfIn PDF document text
    • http://cameradungphat.com/uploads/files/79350753637.pdfIn PDF document text
    • http://schturman.ru/files/files/89177481333.pdfIn PDF document text
    • http://ramenhajimetustin.com/uploads/files/ruwuvalapefutun.pdfIn PDF document text
    • http://iphysiology.ru/upload/kekide.pdfIn PDF document text
    • http://hakanhurdacilik.com/userfiles/file/29871658559.pdfIn PDF document text
    • https://autoroman-service.ro/imagini_ws/53326580047.pdfIn PDF document text
    • http://trackeg.com/en/wp-content/plugins/formcraft/file-upload/server/content/files/1613fab4d52e9e---47979601959.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_off00010ff9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10FF9 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0001280b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1280B 18188 bytes
SHA-256: ee622f7013aa4d6daae314d4c110f9364f8e15f0797ae76eee0509c575b3a53a
font_02_sfnt_off00015788.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15788 10960 bytes
SHA-256: 1e1964e7a1082c9075e9515d4b4c1a79fcb2981c0221d61dc188c37055916921