Malicious PDF — malware analysis report

Static analysis result for SHA-256 069f0e91df059684…

MALICIOUS

PDF

79.7 KB Created: 2021-02-12 21:58:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: a01bfaac345ecbcfe65fd139621fd600 SHA-1: 91f06bfd02f9d803ddee188d266e54c06c06469c SHA-256: 069f0e91df059684a09e9b88aa3c950a21b3fe653a16ca4e9cf81100b8c2436a
206 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

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 0.9998

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
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://druttle.ru/123?utm_term=samsung+s3+battery+draining+fast PDF link annotation
    • https://wabaxudazisivi.weebly.com/uploads/1/3/3/9/133986682/14714.pdfIn PDF document text
    • http://dkmz3.club/apple_series_4_size_guidet9drw.pdfIn PDF document text
    • http://centerverifybadge.com/acrobat_reader_9._5._0_for_windows345q8.pdfIn PDF document text
    • https://mopawikivitofa.weebly.com/uploads/1/3/4/3/134347346/jajavimez.pdfIn PDF document text
    • http://strahuemsya.info/jovusidihpxdd.pdfIn PDF document text
    • https://vafukomoruf.weebly.com/uploads/1/3/4/8/134862603/b14591498716a6d.pdfIn PDF document text
    • https://woxigixekamut.weebly.com/uploads/1/3/0/7/130739530/4744582.pdfIn PDF document text
    • https://mewejubakokexal.weebly.com/uploads/1/3/2/6/132681976/be2f0e27717.pdfIn PDF document text
    • https://mitenipup.weebly.com/uploads/1/3/4/3/134363071/dusenev.pdfIn PDF document text
    • http://parralax.net/57939890985xycbx.pdfIn PDF document text
    • http://reduslimitaly-official.site/hitman_agent_47_27eqwh.pdfIn PDF document text
    • http://best-store.club/83704240775xdlb5.pdfIn PDF document text
    • https://lupexepiw.weebly.com/uploads/1/3/4/3/134318885/54ea08a.pdfIn PDF document text
    • http://slamelina.website/gedobis08g5e.pdfIn PDF document text
    • https://laxopewivizi.weebly.com/uploads/1/3/5/3/135394850/7523225.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://forums.androidcentral.com/showthread.php?t=396483&s=df0f10894af4868914ab1c7de751671cIn 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
    • https://forums.androidcentral.com/showthread.php?t=396483&s=df0f10894af4868914ab1c7de751671cIn 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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eaa8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEAA8 5476 bytes
SHA-256: a6b005ae3becdfb604108000de9beedfc99cb3b224dc8b8b643c5f14762ef54a
font_01_sfnt_off0000fd23.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD23 11532 bytes
SHA-256: 7b810f3da44197dfb08a55a828891b1f6410098b6583ba61143daead29764e4b
font_02_sfnt_off00012402.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12402 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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