Malicious PDF — malware analysis report

Static analysis result for SHA-256 a4d5ee4f939400c6…

MALICIOUS

PDF

49.5 KB Created: 2020-07-28 04:06:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4f9aaf70a5b6e2ac5bfce4963a623eb3 SHA-1: ef468a93dfc87009548a778319942aeef27584b4 SHA-256: a4d5ee4f939400c6c7178f841afad22823fb8f0a8644549df02a3ff0cd538139
214 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 Malicious Link T1059.001 PowerShell

The PDF contains multiple embedded links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, suggests a lure related to a 'scanner manual'. The presence of a QR code lure heuristic further supports a phishing or redirection-based attack. The file is identified as a PDF, and heuristics indicate it's designed to redirect users to malicious sites.

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.
  • QR-code redirect lure medium SE_QR_LURE
    Document instructs the user to scan a QR code with a phone — consistent with QR phishing, but also common in legitimate documents
  • 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=cipherlab+1560p+scanner+manual In PDF document text
    • http://files.stivesharbourview.com/uploads/1/3/1/4/131483143/weruzaga.pdfIn PDF document text
    • http://files.arttherapyderby.com/uploads/1/3/0/7/130774990/gepus.pdfIn PDF document text
    • http://files.the-kitchenplace.com/uploads/1/3/0/9/130969772/3218306.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/1/0429/2889/8211/files/88623121027.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1234/1416/files/12283119194.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/62374455636.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7783/6702/files/turesidefonewag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7746/8327/files/bafukurotubuxusaluvufos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6325/4944/files/xenutebadaluderava.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/6819160869.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3314/1149/files/kifirizigomorolewofovix.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2253/3276/files/dudevaluwa.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_off000079f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x79F8 5500 bytes
SHA-256: d827e09304dfa0cfad62239500fd7b1626d11567e9c4f486bfbd8954d8570ff1
font_01_sfnt_off00008c70.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C70 14412 bytes
SHA-256: 6bc1271f3e27976f4a9ffcf6ac828fa31ca048e2abb08757b345285c2b04555c

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