Malicious PDF — malware analysis report

Static analysis result for SHA-256 f8881b4845beb7e7…

MALICIOUS

PDF

50.4 KB Created: 2020-07-28 05:03:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a7c64d878ba4c83e6c203e0bd8a47a55 SHA-1: e8a24afd987f374ae78fa88fc4f2ed616e14c25f SHA-256: f8881b4845beb7e7e537025ccb9fa06fc8462546b6531277b31c840ffa97c7b5
194 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many pointing to Shopify domains, which is indicative of a link farm used to obscure malicious redirectors. One critical heuristic firing confirms a link to a known malicious redirector at 'ttraff.com'. The ML classifier also strongly flagged this PDF as malicious. The document body contains garbled text, suggesting it is not intended for direct user consumption but rather to host the malicious links.

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=appium+previous+versions In PDF document text
    • http://files.pregnancylossinsilence.com/uploads/1/3/0/7/130739871/kinedatedivamupiwik.pdfIn PDF document text
    • http://files.biggreenadventuretours.com/uploads/1/3/1/4/131407281/bofagizu-rumoderobigenom.pdfIn PDF document text
    • http://files.newhavenluxuryapartments.com/uploads/1/3/0/7/130740022/478604.pdfIn PDF document text
    • http://files.kathrynemyoung.com/uploads/1/3/1/0/131071076/porewuvofadaxa.pdfIn PDF document text
    • http://files.joepeatfield.com/uploads/1/3/1/1/131164321/c64ea38b.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/1/0436/9242/5384/files/vukamelajamusubodeve.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0204/4316/files/4919474359.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/pigirerunozekolufis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5690/5885/files/laganeretanirodefowap.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4345/4102/files/18328298788.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/8116/9051/files/34109409430.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5466/8705/files/rumaserefojapexarobukoluz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5988/5733/files/62199234725.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3905/5253/files/61243531260.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0705/7825/files/gekesovijotuxafi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0805/6740/files/zamadanekobufiwa.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 8

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_off00008447.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8447 4572 bytes
SHA-256: 0bf14f3ef2d3ae84485b2cd48ecf9b86bcdfddec4108ec48f5afb1ba70f8d93f
font_01_sfnt_off000093a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x93A8 12544 bytes
SHA-256: 18dfc3a292f95debec6e3523a2b7a6dcd02004c8dce4590c29a9e59f8e2817fe

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