Malicious PDF — malware analysis report

Static analysis result for SHA-256 2120c51cc194814f…

MALICIOUS

PDF

44.9 KB Created: 2020-08-07 20:46:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 652f616338931ce6ab8d154fa35955ce SHA-1: 34c67c7e2763bacb813867c8fba05ea9ffb68914 SHA-256: 2120c51cc194814f0b65b7668d80b0ef0a5df4facda064ac4df759dae052751f
202 Risk Score

Malware Insights

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

The PDF contains a link farm and a malicious redirector, indicating a phishing or scam attempt. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK firing confirms the presence of a link to known malicious infrastructure. The PDF_SEO_LINK_FARM heuristic indicates the document is designed to host numerous external links, likely for SEO manipulation or to distribute malicious content. The SE_DOWNLOAD_BUTTON heuristic suggests a lure to trick the user into clicking the malicious link.

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.ru/pify?keyword=succession+planning+steps+pdf In PDF document text
    • http://files.allisonevansphd.com/uploads/1/3/1/0/131071151/zisabapas.pdfIn PDF document text
    • http://nesebov.kingofkingslutheranchurchnnj.org/uploads/1/3/0/9/130969204/fuxivefixag_bemuxumule_merowonupu.pdfIn PDF document text
    • http://files.awakenemerge.com/uploads/1/3/1/4/131453645/zijazes.pdfIn PDF document text
    • http://files.usydfoodcoop.org/uploads/1/3/1/4/131454190/0a8ec64.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/1/0431/9110/7752/files/5746328054.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5592/1817/files/13576227247.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/9228/5342/files/mewelawokajajuzovos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5107/3174/files/nefejex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6498/2693/files/gomilevipi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/90262961418.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4790/1592/files/31858944406.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/9535/7595/files/wenifomapirilutifamidiza.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7916/2263/files/84789465433.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/71860998709.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7415/0809/files/sepse_sintomas.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 7

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_off000072c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72C7 5332 bytes
SHA-256: d8c734dddd379382082c785e92e7deae2990c6af7662830270caa9e7f9ea1d2b
font_01_sfnt_off00008503.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8503 10000 bytes
SHA-256: bc25b25bbc73e14921af93a858a47306e6714f36c12615b811d51ee825d5b8ce

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