Malicious PDF — malware analysis report

Static analysis result for SHA-256 f587b6416c7178a0…

MALICIOUS

PDF

42.3 KB Created: 2020-08-15 06:30:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5268900d6df5c48db79bb679bb9da905 SHA-1: 91637af79a5a154d7d0ee6bd847f8c0a340c8e7f SHA-256: f587b6416c7178a0652d7865d684ee9e14964d88f5c630cf74d727a8cc89c08a
194 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, many of which point to Shopify domains hosting other PDFs, creating a link farm. One critical heuristic identified a link to a known malicious redirector, ttraff.com, which is designed to lure users into clicking on further malicious content. The document body, though heavily obfuscated, contains the target URL, suggesting an attempt to disguise malicious redirection as legitimate document content.

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.com/pify?keyword=district+court+nsw+unreported+judgments In PDF document text
    • http://files.sc-air.org/uploads/1/3/0/7/130776735/0e8f570fdd90cf.pdfIn PDF document text
    • http://files.naturalmusicmarketing.net/uploads/1/3/0/8/130813899/9533ce77c1e795.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/1/0434/3994/7932/files/voting_ballot_template.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0962/2687/files/amazing_grace_the_history_and_theology_of_calvinism.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0449/9108/6750/files/vuvumuletoxapamepediwibew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2053/2384/files/38961664479.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7020/1760/files/55250389161.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8437/2386/files/borrowers_and_lenders_act_ghana.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/9008/7829/files/wagowakajulaloxezixux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9480/2581/files/kejegotijewixoraxab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7932/7137/files/tawuperugowonafavokano.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1425/7820/files/kedovakasodipu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5032/7451/files/11884818659.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6191/1460/files/tunudiperexibupalajelule.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 3

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_off00006878.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6878 5316 bytes
SHA-256: b91afec0604bbf9777becb3c1a25482c773388f4b3b6ce38b3625d3dcab2852a
font_01_sfnt_off00007a8b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A8B 9976 bytes
SHA-256: 52f529874e2eda94eb2a097c06364c1189eeeb3f6dc0d8658e8040a5263e7348

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