Malicious PDF — malware analysis report

Static analysis result for SHA-256 cbbbe94672520d73…

MALICIOUS

PDF

41.6 KB Created: 2020-08-16 20:40:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 9667b24fe5081e5cac5874d6ad08a527 SHA-1: bfa071d3d16c8d48c8544a296c2c16ad9774f5a0 SHA-256: cbbbe94672520d7315c6053995061333ff32ce42e835d1f814e602b7a5587455
202 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains multiple embedded links, with one identified as a malicious redirector. The document body and heuristics indicate a lure for an advance-fee scam, likely related to a fake download or prize. The presence of a malicious redirector suggests an attempt to lead the user to a malicious site or download. The PDF also contains a link farm, indicating a potential SEO poisoning attempt to drive traffic to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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
  • 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://ttraff.cc/pify?keyword=bookworm+adventures+2++with+crack In PDF document text
    • http://files.hugsplus.com/uploads/1/3/0/7/130776180/muxumudugal.pdfIn PDF document text
    • http://dawopiw.riverhustonart.com/uploads/1/3/2/6/132680903/5337910.pdfIn PDF document text
    • http://fegamuw.everydayarteveryday.com/uploads/1/3/0/7/130738546/rijatozagabun-nimadizatimoxe-gosokipi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4492/0734/files/small_converter_em_ppt.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/0198/4662/files/hallelujah_score_piano.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8264/5665/files/vuvakisijumekoxixareza.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/74251218784.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8536/4390/files/xifijepewufadetemonofa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2869/2643/files/lafexinavuloj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/3744/7576/files/resume_format_for_accountant_assistant.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3469/6097/files/cerebral_venous_sinus_thrombosis_guidelines_uk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8572/5857/files/free_gta_5_ps_vita.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7135/4533/files/security_risk_assessment_handbook.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0221/5074/files/dusexupezokarateta.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

Related samples 3

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000063e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63E1 5544 bytes
SHA-256: b72f38121ab1245fdebc972a773101b82713b9c2155e6112015b109ee4b1bcb4
font_01_sfnt_off000076ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x76AC 10180 bytes
SHA-256: 3cbd4cdcdd5cdb74a87be57b5de820ef33b4e4faa07ff72a1000c6b962d7b45e

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