Malicious PDF — malware analysis report

Static analysis result for SHA-256 6d5925c4fcebe6ed…

MALICIOUS

PDF

58.5 KB Created: 2020-09-01 04:58:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 01c3981c4b8587317a3b35551bf5fdcb SHA-1: d938514a955fde869dca322e12b1ebb8d8c78695 SHA-256: 6d5925c4fcebe6edc1eefaeb2cc48ab711bbc1ec47770bc3989f34258e57f463
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many of which point to redirector infrastructure. The primary malicious URL identified is https://ttraff.cc/wix?keyword=standard+thread+size+chart+pdf, which is flagged as a malicious redirector. The document body, though heavily obfuscated, contains the same lure text, suggesting a phishing attempt to drive traffic to malicious sites.

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/wix?keyword=standard+thread+size+chart+pdf 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/b8c837_a7d1e08b2b22426390614c8d885f4e7b.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/1c90dc_09970e8af6e548959447fc03cc9cbb24.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/9421c8_4299ed6b238d44879f4527cb9a7fd32c.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_eb28dda2c08d462290a8804f671fe9d8.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9893/8274/files/litukunowefe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9212/2536/files/11509209845.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1848/4888/files/52295016785.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7497/7945/files/shockwave_daily_diff.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/0f1814_8af9c68ebf734f4d9ce008c2c61c909e.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_0893b9117fc24951aa6f7b0ce4139260.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/d775a9_454eea97e2db4b47be124a54a58b57dc.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/286fb8_efd9e67f31f846eaa977098e76e79591.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b65acf_a665fa6c1bd642d6a3490ccfe4fced2c.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0463/2992/files/amaron_car_battery_price_list_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2125/4312/files/61721900682.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 6

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000820d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x820D 5364 bytes
SHA-256: 75de1c8da3e18904868d125b9eed5cb24a513916bb27eba0568608ffc730988f
font_01_sfnt_off00009451.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9451 16448 bytes
SHA-256: 4f2a6d288f361d37f167e2d30a3b4083508b07d3c06c5d786798ed4dd257348b
font_02_sfnt_off0000c7d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC7D6 16064 bytes
SHA-256: 77905ff9885e60cfff17cf33ad9da418757c231635603c6b4cc239c84c233917

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