Malicious PDF — malware analysis report

Static analysis result for SHA-256 ca98fdb086cf9309…

MALICIOUS

PDF

42.6 KB Created: 2020-08-01 19:21:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6448d041ab9775f8ff170ed722e0c3c7 SHA-1: 7b04a11eff9ad090276662fbaaf8f93dcb4db8d4 SHA-256: ca98fdb086cf93097eb862f9072814f1a5d21fc1623810e826c723f1b4320237
194 Risk Score

Malware Insights

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

The PDF was flagged for containing a large number of external links, indicating a link farm or SEO manipulation tactic. One of these links, 'https://ttraff.com/pify?keyword=flavor+wave+oven', is identified as a malicious redirector. The document body contains garbled text but also includes the malicious URL and several Shopify-hosted PDF links, reinforcing the link farm and redirection attack pattern. No scripts were extracted, limiting the analysis to the PDF structure and embedded 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.com/pify?keyword=flavor+wave+oven In PDF document text
    • http://files.queensofourbeautifulplanet.com/uploads/1/3/1/3/131397971/8463441.pdfIn PDF document text
    • http://files.remus-emsermann-lab.org/uploads/1/3/0/7/130775969/787161.pdfIn PDF document text
    • http://files.elgatothecat.com/uploads/1/3/0/8/130813301/5751710.pdfIn PDF document text
    • http://files.horshamtreesurgeons.co.uk/uploads/1/3/1/1/131163890/165eeadab28c.pdfIn PDF document text
    • http://files.kgsa.org.au/uploads/1/3/2/8/132814303/geniwov.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/1/0434/3640/8982/files/govazepiperogutowugofit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4831/2738/files/gopumizaditukedixadoz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5653/7495/files/craigslist_philadelphia_craigslist_org.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6745/7188/files/zenudimuziwoketokukamel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6859/5112/files/rumuwonuji.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3566/4284/files/65028690125.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0441/8459/files/bubapixemivoki.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/6488/3355/files/2373995692.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9586/8057/files/mikepogalomekudajisal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3070/8375/files/1890288162.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/2047/3752/files/jepegabolizadedamuper.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/37629755229.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9893/8274/files/50573841205.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
🗂 Part of campaign: horshamtreesurgeons.co.uk 3 samples

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000699f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x699F 4608 bytes
SHA-256: e55ea60632fc72eb2f3faab0994d811bec0f5d151bd1b32de8c7b8260db7edec
font_01_sfnt_off0000796f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x796F 10664 bytes
SHA-256: 42419e8940d5b2446532c37a72b32b0757b53ff15e70d9f48f37910cab7a6204