Malicious PDF — malware analysis report

Static analysis result for SHA-256 bcb77e9f865b0ee9…

MALICIOUS

PDF

43.0 KB Created: 2020-08-22 10:31:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 17cf440668f5bfbdb4cb9fbc2ab8557f SHA-1: a38eb4dea167fb1b7e6ed9cc1b75076cc7f02544 SHA-256: bcb77e9f865b0ee9cd2667491f6795c2e9d6fd2d76d996917a4f30147c5b293f
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a link farm hosted on Shopify. One of these links, https://ttraff.cc/pify?keyword=aha+asa+guidelines+subarachnoid+hemorrhage+2012, is identified as a malicious redirector. This suggests the document is designed to drive traffic to malicious sites, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • 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=aha+asa+guidelines+subarachnoid+hemorrhage+2012 In PDF document text
    • http://files.fmta.org/uploads/1/3/1/0/131070520/sapikanupuk.pdfIn PDF document text
    • http://files.offthedeckgolf.com/uploads/1/3/1/6/131636712/bozuwabof-tulotebulaba-lozigawisowere.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/1/0431/6574/5314/files/canon_ae_1_program_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9101/6347/files/vuxeluv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3925/0853/files/61616226097.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5152/4008/files/wondershare_video_converter_ultimate_android.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8922/2037/files/arms_race_mod_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1532/3291/files/sudigexof.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6137/1290/files/vawimexarasanadujisatox.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3672/9766/files/45001102887.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3702/3641/files/zosiwiwixedefu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4891/8440/files/zotel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3524/5214/files/baxojipubokodavi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5762/6792/files/68954918425.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7245/3797/files/98442868964.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0692/6741/files/5428490166.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_off000068b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x68B2 5808 bytes
SHA-256: d8cf08840c05f043b94e347004757c02d689c71edbd44527517c3205f52eddf7
font_01_sfnt_off00007c41.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C41 10112 bytes
SHA-256: f835c0ab026f00d2c2c3df7c40e3990fe55ffc3e0ce76961b0a8cacd84cb8532

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