Malicious PDF — malware analysis report

Static analysis result for SHA-256 913b200b021a3aae…

MALICIOUS

PDF

64.8 KB Created: 2020-08-20 13:16:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4ae555d7a7655bde2c01f6e2c52c266e SHA-1: e17bbdd46b4114656f0b9fca296697adcae6c667 SHA-256: 913b200b021a3aaec4c57e1801f1f68b88eb163facd078dd00910cffb602cf92
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 URLs, with a critical heuristic firing indicating a link farm designed to redirect users. One of the primary URLs, 'https://ttraff.com/pify?keyword=answers+for+what+are+you+up+to', is identified as a malicious redirector. The document body also contains this URL and another link to a PDF on Shopify, suggesting a lure to external content. The overall structure points to a phishing or malware distribution attempt leveraging a large number of links to obscure the malicious intent.

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=answers+for+what+are+you+up+to In PDF document text
    • http://files.saskatoonbraves.com/uploads/1/3/1/3/131379085/5027771.pdfIn PDF document text
    • http://pamezep.trevorlakecomputers.com/uploads/1/3/2/6/132682137/9291834.pdfIn PDF document text
    • http://files.wmconsulting.be/uploads/1/3/1/1/131163514/4b3e1bae144.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/1/0427/8976/5279/files/video_ad_script_template.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7783/6702/files/famavibokowenidejejerax.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7720/6178/files/edema_pulmonar_fisiopatologia.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9087/0423/files/kelojudajomazur.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4965/5203/files/razabinurijujafuzakonap.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0463/4676/4450/files/ielts_academic_task_1_vocabulary.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0453/3600/2715/files/wevarik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6501/5460/files/51890668557.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8719/9394/files/kemefinujaneju.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2965/9797/files/psychosocial_development_theory.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9383/5432/files/merufepodomaw.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
🗂 Part of campaign: trevorlakecomputers.com 6 samples

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_006_off0000d8e8.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0xD8E8 18412 bytes
SHA-256: 1d43307066249633cdee82bf675d701ed72b7f7311abed8b57ff7ede4c003ca7
font_00_sfnt_off00006dfb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6DFB 13388 bytes
SHA-256: cb7ff31a029faf76b9f6341bf6f009cfe743cdfa7d4d5b2737512dfd938c26d9
font_01_sfnt_off000098d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x98D3 5140 bytes
SHA-256: 4ac4c2bed2af6b29d48629ea32ee1229aee0f8ec4473e346bea2a83c23b69bcb
font_02_sfnt_off0000aa5e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAA5E 15028 bytes
SHA-256: e931720856476c73ca880200013e801bdf772142905dea10037b7008642cbdfb