Malicious PDF — malware analysis report

Static analysis result for SHA-256 5f4516763aca0a1b…

MALICIOUS

PDF

36.4 KB Created: 2020-08-18 19:27:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 21298cee214081ae909cd0873a302979 SHA-1: 68a2fd12ce9be93c2ce65e2fc00013d08f5441ce SHA-256: 5f4516763aca0a1bec5de6259eb6ad0a8a5ed3d294fc2f2e77d2113219e8a227
202 Risk Score

Malware Insights

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

This PDF document contains a mass of external links, many pointing to benign Shopify-hosted PDFs, but one prominent link directs to a known malicious redirector. The redirector URL is 'https://ttraff.ru/pify?keyword=pulse+secure+latest+version', which is designed to impersonate a software update lure. The document body, though heavily obfuscated, contains this URL and other PDF links, suggesting an attempt to distribute malware through a phishing campaign.

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=pulse+secure+latest+version In PDF document text
    • http://files.cottondownsouth.com/uploads/1/3/1/4/131437593/68f5e82128.pdfIn PDF document text
    • http://mawawu.hayley-newman.com/uploads/1/3/1/4/131406749/d572cf.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/1/0432/9770/2046/files/36504655638.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6350/0197/files/gfebs_user_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3450/1535/files/gozatuwezaronajulogipi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4960/7590/files/73374685995.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6997/3415/files/13370231706.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6790/6979/files/58806095057.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/13652925252.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6385/2712/files/guxakofufujefifum.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 4

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_off000052b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x52B2 4856 bytes
SHA-256: a7662256613f612832cceb646c8c32ae4923173147aec449012e41fa227a4f4b
font_01_sfnt_off0000633f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x633F 9968 bytes
SHA-256: 74a1d684e079b2fad4bf1f06887b8b82fc0cd8255f07408b1e24425e43969bde

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