Malicious PDF — malware analysis report

Static analysis result for SHA-256 86bcfe4d72a3beb5…

MALICIOUS

PDF

38.2 KB Created: 2020-08-28 08:08:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3754e2b01ae0afa031a33c0dda58dc5a SHA-1: 0fcea875cbea0f3cc5ca38b8359edcd0c58a985c SHA-256: 86bcfe4d72a3beb566ce2d7a8eb3edc0016486ef3d52f43f26bc57f5997def89
214 Risk Score

Malware Insights

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

The PDF contains multiple embedded URLs, with a critical heuristic firing for a malicious redirector link. The document body, though heavily obfuscated, contains a URL that points to a redirector, likely intended to lead the user to a phishing page or a malware download. The presence of numerous Shopify links suggests an attempt to disguise the malicious link within a larger link farm.

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.
  • 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.
  • 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=general+mobile+discovery+bilgisayara In PDF document text
    • http://zabafeduk.minhtamcharity.org/uploads/1/3/1/0/131071243/7521635.pdfIn PDF document text
    • http://files.braaibeque.com/uploads/1/3/0/7/130775174/3392100.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/1/0432/0677/0849/files/personality_vocabulary_worksheets.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0763/1782/files/xirot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8415/2986/files/89553413745.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9100/0472/files/citati_lubovnie_romani_online.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5811/8312/files/bitlocker_password_recovery_software_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7982/6597/files/40182987522.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5108/0090/files/fovalozalufokapadogepema.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7186/4993/files/51984998356.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9174/5185/files/composite_shapes_perimeter_worksheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8180/8549/files/appareil_respiratoire_humain.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_off0000556d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x556D 5592 bytes
SHA-256: ff238bfeba8714e4653fc5bf5f1712f6015da4492f6811ec08f3e98aabaf2c31
font_01_sfnt_off00006864.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6864 10664 bytes
SHA-256: 7ab671fb3ca385869019ccb666fb526fbdbf876f562fee4ffe7abc28801ed43e

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