Malicious PDF — malware analysis report

Static analysis result for SHA-256 1bc5894d2abfa499…

MALICIOUS

PDF

53.0 KB Created: 2020-07-28 18:57:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: db660e87519a2fa70a473cd3914f9c26 SHA-1: 32d3dba23b486b866c68c7fffd99b5946a01b262 SHA-256: 1bc5894d2abfa4997e1fd9506ca29a2235dc43cbd5dc9d01fb97b162b7f1aaeb
194 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to a link farm hosted on cdn.shopify.com, which is a tactic to improve search engine ranking for malicious content. One critical heuristic indicates a direct link to a known malicious redirector at ttraff.com. The document body, though heavily obfuscated, contains metadata suggesting it was generated by wkhtmltopdf and includes a keyword related to job interviews, likely a lure to encourage clicks on the malicious links.

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.com/pify?keyword=warehouse+coordinator+interview+questions+and+answers In PDF document text
    • http://files.isrcincinnati.com/uploads/1/3/0/8/130874180/d0f9a75d47b6ee7.pdfIn PDF document text
    • http://files.malbeads.com/uploads/1/3/1/3/131379792/jakixuku_bivubaxoreres.pdfIn PDF document text
    • http://files.ucaninstall.net/uploads/1/3/0/8/130813609/wobumerotodedarukoli.pdfIn PDF document text
    • http://files.zygos4art.com/uploads/1/3/1/0/131070230/viwujogefoje.pdfIn PDF document text
    • http://files.ptkranch.com/uploads/1/3/1/6/131606965/fadezujeno.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/1/0433/0687/7080/files/1885060089.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8624/2209/files/73483113343.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8233/3851/files/zerer.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7030/7995/files/8437176513.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6275/5490/files/21428450968.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9502/4025/files/jegasik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5965/8398/files/33328146518.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4160/2208/files/98541673982.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/1322/4094/files/41410808115.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/23158701460.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9777/6543/files/zifibiponisisuzavag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0799/1208/files/71747320127.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 8

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_off00009037.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9037 5168 bytes
SHA-256: 735c851b895e8f0452a1416d3f45774f2f398c41c3947770b39f6c41a9470615
font_01_sfnt_off0000a1db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA1DB 10720 bytes
SHA-256: 216c180cac2508612d9a0c0c478f820020ed5c0063d8d91ca17af671599b4da2

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