Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ff9fb7077496378…

MALICIOUS

PDF

43.9 KB Created: 2020-08-01 02:46:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a1637d73cc9150cd5ede151034783f6b SHA-1: ec3a43184896ff2203e76013a3a335d585ab19b1 SHA-256: 0ff9fb70774963788964e13d2cbf52685aac413fbe16f17aa75df006c9f005b9
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic identifying a link to a known malicious redirector. The document body's text and embedded links suggest a lure, possibly for phishing or to drive traffic to malicious infrastructure. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly indicate malicious intent, likely related to spearphishing.

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.ru/pify?keyword=somebody%2527+s+watching+me+meme In PDF document text
    • http://files.chunkybrother.com/uploads/1/3/0/8/130874469/4056091.pdfIn PDF document text
    • http://files.acecancercareinc.org/uploads/1/3/0/7/130739780/9944318.pdfIn PDF document text
    • http://files.koppelmun.com/uploads/1/3/1/4/131438891/5694487.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/1/0439/1842/6267/files/80263890583.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5851/1522/files/59921168815.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5784/8224/files/25461767995.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7546/0517/files/15454904956.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3713/0914/files/sejikonemuremi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3885/0728/files/98289547551.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4320/0929/files/11339521723.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2631/6455/files/77102998711.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6102/6719/files/54500295986.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1359/3499/files/jack_lalanne_juicer_manuals.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9508/1625/files/86224813861.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 6

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_off00006a7f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A7F 5696 bytes
SHA-256: 25ab62d5bb2bb2babd118c5cda63c3ce19dee2365adfc46b95f1e595fa0ad7fc
font_01_sfnt_off00007ddd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7DDD 11156 bytes
SHA-256: 13d88a09a509833bb6cc12ff6a1a35fd3f22e39122cf5c1112da3c4d8580a41a

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