Malicious PDF — malware analysis report

Static analysis result for SHA-256 22883bb60e89feac…

MALICIOUS

PDF

38.5 KB Created: 2020-09-03 01:44:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 2ed34b43ba22b654be0b3115cdae8d81 SHA-1: d9abcf50cf6166babd8b3172572ec0118a31fd11 SHA-256: 22883bb60e89feac4daafbc6da295e7c4db025c48958a87e7a94cffb2893d90c
194 Risk Score

Malware Insights

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

The PDF file was identified as malicious by a machine learning classifier and contains numerous embedded links. One critical heuristic indicates the presence of a malicious redirector link, specifically 'https://ttraff.link/wix?keyword=england+birmingham+weather+report+today'. Additionally, another critical heuristic flagged it as a PDF link farm, with many links pointing to 'static.usrfiles.com'. The document body, though heavily obfuscated, contains similar URLs, reinforcing the link farm and redirection attack pattern. No scripts were extracted, and the document body content is not directly indicative of a specific lure beyond the presence of URLs.

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.link/wix?keyword=england+birmingham+weather+report+today In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static.usrfiles.com/ugd/3ce946_cdc846c6889945608bc1a4d3b620d628.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/29c71c_e9541386a9ed4b62ab2a139a5aeef443.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/2ca09c_0bca15c605c7485187d4eb5a1b6d9b4a.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/63022f_459028e6b5eb49c8a8b3ae1325b64970.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/9ec29b_fab869c24e0b41409817aa26d291530a.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/dad90e_94114f9cddbf4cd6959062e217dbdf81.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/76156b_5256893193784d9fa6c107b71d0a7899.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_9dd735709d854609871dd0341f59683b.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_d57a875f48484ecb9c7ba2770793a251.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xiguxalenagidofivixonagez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6772/7269/files/bigiju.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6799/8362/files/sakanurojejezakebu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0443/4313/2316/files/online_banking_system.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1850/0765/files/46461462953.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0450/7769/2581/files/pasion_segun_antigona_perez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6625/2703/files/kasanufefatanal.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000050ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x50AD 5484 bytes
SHA-256: 64e5fcb0f4d562d4e7db0faf4db5ec1cbdb8f3aae149be76f369403c89ba4a2e
font_01_sfnt_off0000633b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x633B 13116 bytes
SHA-256: 3ca8e116c996a4024df1789213c983b4be48df14ccbd836799231db34b7355d4

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