Malicious PDF — malware analysis report

Static analysis result for SHA-256 66ab9138bb64ff73…

MALICIOUS

PDF

41.5 KB Created: 2020-08-06 05:28:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 013dd3f634faceadaf11a0bd7f5d89a0 SHA-1: 0a3282fc36e6c5b9bc1bef63889032876ab96672 SHA-256: 66ab9138bb64ff73b7fa5cb55639b250650ac595aca5b7bae3ca073f7a798c90
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous links, many pointing to Shopify domains hosting other PDFs, suggesting a link farm for SEO manipulation. A primary link redirects through 'ttraff.cc', a known malicious redirector, likely to a phishing page or malware download. The document body itself is heavily obfuscated but contains the redirector URL and references to downloading a PDF, indicating a lure for malicious 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.cc/pify?keyword=the+tattooist+of+auschwitz+pdf+download+free In PDF document text
    • http://files.wvusmclub.org/uploads/1/3/1/0/131070246/kafuveg_duzosiluwemi_sepufinufe_diwoku.pdfIn PDF document text
    • http://files.thecancerolympics.com/uploads/1/3/0/7/130739225/2253683.pdfIn PDF document text
    • http://files.gracelutheranlansing.org/uploads/1/3/1/4/131438069/1504100.pdfIn PDF document text
    • http://files.mallorca-management.com/uploads/1/3/1/6/131637839/8501567.pdfIn PDF document text
    • http://files.nicoleedwardsauthor.com/uploads/1/3/1/4/131437061/tozogorazamigos.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/1/0428/6860/5095/files/dinotozokuwanaragomuda.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7186/3961/files/laxufukonobib.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/21659337375.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6332/9446/files/46323631465.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4211/1650/files/lixezep.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8749/5321/files/doobie_brothers_another_park_another_sunday.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/96989945255.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5511/1589/files/34206614177.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8134/3903/files/86653958352.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4208/5783/files/womixu.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_off00006499.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6499 5332 bytes
SHA-256: ee828fb9f43c6f95b99a483ab76bb3ad504275ed233ba2012a074ff851c538ca
font_01_sfnt_off000076d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x76D0 9864 bytes
SHA-256: 61ccefb94b10a39a5753dc0c47ed7cfc097208046614ce47c5a4f89e2ac12663

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