Malicious PDF — malware analysis report

Static analysis result for SHA-256 beb1c9c31dc3a58a…

MALICIOUS

PDF

70.7 KB Created: 2020-11-10 17:30:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-03-01
MD5: d343bcac23c0d62d998c2886038d2668 SHA-1: 7e8097a87c3f7b052f5f5ee2ee6efa78d035ac9f SHA-256: beb1c9c31dc3a58aaafcb9cf7d3e16006f44d9b93f7ec76820b493ac2a4282d1
216 Risk Score

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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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) or Microsoft license-boilerplate 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://trafffi.ru/123?keyword=woods+timer+manual PDF link annotation
    • https://defelidiko.weebly.com/uploads/1/3/1/0/131070982/vugisaku.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388174/normal_5f9d5c698e17c.pdfIn PDF document text
    • https://zesojewati.weebly.com/uploads/1/3/4/4/134432656/jitujaliraz.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://uploads.strikinglycdn.com/files/93036e9b-d01e-4abe-a814-c7c0567d6648/kozesapatufitalusuwogur.pdfIn PDF document text
    • https://s3.amazonaws.com/nagev/gevinomogu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a1ff5613-6643-4334-b23e-07d5c0af9d83/nfpa_25.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5262be6f-64c7-4a1f-a9e0-12878abea409/18427273247.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/41d1dec0-fad4-4def-af04-13c27da46b6e/sudaw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/19b9fae9-4b11-44d0-82c1-b66982cb68c4/livongo_meter_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/remavuj/the_elite_wordpress.pdfIn PDF document text
    • https://s3.amazonaws.com/vuraradaso/postgresql_command_line_cheat_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/tobojelusiwi/fake_sat_score_report_generator.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6bb7ff10-320b-41a9-9bd4-8acfbda10ccb/xuwobuzopaluzovusawesaf.pdfIn PDF document text
    • https://s3.amazonaws.com/muvazi/moxonew.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c953e77f-596e-4c26-a413-ba9944b01aab/kuniji.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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c960.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC960 4864 bytes
SHA-256: 9c2bdf3c258c61c30dcff30ed64dd0206d973752c9100cc69bf7fbafa6761d3e
font_01_sfnt_off0000d9d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9D2 11356 bytes
SHA-256: 7e1000856e9a6ff0f8f12bfa7ffe062e0b6f8707238b07589dd6b7e5ebeeed25
font_02_sfnt_off0000ffe4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFFE4 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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