Malicious PDF — malware analysis report

Static analysis result for SHA-256 3bc0140245e06fd7…

MALICIOUS

PDF

80.5 KB Created: 2021-09-20 12:01:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: 919dc53c6b6b7f9fa3099784a4aab1ae SHA-1: bb32f42c26a8e9ea0635b8ebc2d7e4d95b175c2c SHA-256: 3bc0140245e06fd748b495e08fd62e7b0376a50a1a467dedf97764286f604f22
146 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The sample was detected as malicious by ClamAV and an ML classifier, indicating a phishing or trojan threat. The 'SE_CALLBACK_LURE' heuristic strongly suggests a callback phishing or tech-support scam, where the document prompts the user to call a phone number. While no scripts were explicitly extracted, the PDF structure and embedded URLs point towards a malicious document designed to deceive users into initiating contact with the attackers.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9985

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://hamasataccessories.com/userfiles/files/ganixasudonegevadem.pdf In PDF document text
    • http://nbmounts.com/userfiles/file/1630677491.pdfIn PDF document text
    • http://kaupa.cz/userfiles/file/22842741316.pdfIn PDF document text
    • http://mijneigenlift.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1613b67715a4a8---rosipowesesazusa.pdfIn PDF document text
    • http://pospatrans.cz/UserFiles/File/rotorevat.pdfIn PDF document text
    • http://pataibicaj.hu/userfiles/file/vugajomodirufonosiwekof.pdfIn PDF document text
    • http://dallard.fr/ressource/site-image/files/22183369933.pdfIn PDF document text
    • http://plenaseguroseprevidencia.com/fotosempresa/files/dizazuzikogorideg.pdfIn PDF document text
    • http://xedaptap.net/userfiles/file/43522884704.pdfIn PDF document text
    • http://ap116.ru/userfiles/file/penevoza.pdfIn PDF document text
    • https://markzone.az/wp-content/plugins/super-forms/uploads/php/files/bpco09adti52pj6c382eumacr5/23054408248.pdfIn PDF document text
    • http://nieruchomosciklodzko.pl/files/file/kipotafuda.pdfIn PDF document text
    • http://debsecond.net/UserFiles/File/63964542627.pdfIn PDF document text
    • http://dlzhrjd.com/images/uploadfile/files/maxoled.pdfIn PDF document text
    • http://teenmag.cz/userfiles/file/17539941730.pdfIn PDF document text
    • http://architetturaurbanistica.it/userfiles/files/rebotitasevorumelakase.pdfIn PDF document text
    • http://furniture83.com/upload/files/52735513949.pdfIn PDF document text
    • http://sriraghavendratemple.com/ckfinder/userfiles/files/fafomemebefoxuwofeje.pdfIn PDF document text
    • http://baove24h.org/upload/files/33189446239.pdfIn PDF document text
    • http://dfwsedan.com/nbloom/fckuploads/file/24649552300.pdfIn PDF document text
    • http://ageddfjtj.pretty-match.com/upload/files/74003092125.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/1xuhb7AK25c/uplcv?utm_term=video+into+live+wallpaper+iphonePDF 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_off0000d774.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD774 17584 bytes
SHA-256: c2ce7142bbf61af611630fbbce7a12d42912ece75283dd7b03e878d84c82cd9a
font_01_sfnt_off00010494.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10494 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00011cab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11CAB 10444 bytes
SHA-256: bed5a9608e0713f1b00d679949c4fc66a9736b65f8e57d88df74caad9f20c0aa

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