Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d0a4aa92cc5517d…

MALICIOUS

PDF

39.7 KB Created: 2020-08-08 05:06:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ed85ae6edf63314e65336781a5a837d4 SHA-1: 9c8f94d36c6ea361eb6a72646f044ab470b39fd8 SHA-256: 5d0a4aa92cc5517d49fee18ad9c2885db0411339cd22de83867b109ba76b28bc
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many of which point to a redirector service (ttraff.cc) known for malicious activity. The document body, though obfuscated, contains URLs that appear to be part of a link farm designed to attract search engine traffic, ultimately leading to the malicious redirector. This suggests a phishing or scam attempt masquerading as a document download.

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.cc/pify?keyword=systematic+risk+and+unsystematic+risk+pdf In PDF document text
    • http://files.heathandhaveringurc.co.uk/uploads/1/3/1/6/131606407/roweziduk.pdfIn PDF document text
    • http://files.krishanahan.com/uploads/1/3/0/8/130874055/tavoxu.pdfIn PDF document text
    • http://files.anthonybellavia.com/uploads/1/3/1/3/131383294/928ea3d7b1246.pdfIn PDF document text
    • http://vubexuv.oxfordmu.com/uploads/1/3/1/6/131637316/5096081.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/1/0429/8833/9354/files/81490707687.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6717/9165/files/guzitipisemagilapizib.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0472/3349/files/astm_e8_standards_for_tensile_testing.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3239/5423/files/bivepamuwemefova.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6255/0940/files/99390779836.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4957/3784/files/podilipofiwe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0781/1482/files/jimudaror.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2848/0154/files/82704672177.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2574/3515/files/zogotiwuwu.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_off00005d98.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D98 5540 bytes
SHA-256: 4e610c9c23082b16d462089cfa69bcbb395a5ef184582d2e172ed379ad2687ca
font_01_sfnt_off00007063.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7063 9840 bytes
SHA-256: f7f6dceb23a0b5cfbdbe4a65c69393510d30ccf467187e3674069373408633b2

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