Malicious PDF — malware analysis report

Static analysis result for SHA-256 79c3b4b4fb442155…

MALICIOUS

PDF

40.1 KB Created: 2020-08-18 23:06:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: fe53509eb74cdffa2edc11632c71447d SHA-1: 7c4b8d9b8e5d757b2a2f6d1d8663fb6f3d6c05a7 SHA-256: 79c3b4b4fb442155ae606c45d519bf320b24f8243c4933d7a5d41dab035799bc
194 Risk Score

Malware Insights

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

The PDF contains embedded links that redirect to a malicious URL, identified by the 'ttraff.cc' domain, which is flagged as a malicious redirector. The document body, though heavily obfuscated, contains the same malicious URL and several benign-looking Shopify URLs, likely part of a link farm to improve SEO for malicious content. The ML classifier strongly indicates maliciousness.

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=cross+check+torque+seal+datasheet In PDF document text
    • http://files.aschaxel.com/uploads/1/3/1/6/131637043/3430468.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4211/1650/files/26207254187.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2485/0842/files/28755328109.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9856/1957/files/saurashtra_university_b._com_sem_1_books.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5916/5849/files/23112232931.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8289/0912/files/anton_calculus_8th_edition_solutions.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7578/8184/files/larval_acid_classic.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/61086590007.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/6082/0133/files/29566343195.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9593/2584/files/zukukebovegolidawozipilod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7789/3270/files/xexarodatasosititavawurul.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8702/8641/files/mezobidepirazi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6099/9845/files/beelink_j45.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0980/9318/files/quick_sort_in_python.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 3

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_off00005093.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5093 4968 bytes
SHA-256: 3fc6505a1a41a35981102f90b3653ae8c47e8fcae00ff3b39d28011828351965
font_01_sfnt_off0000618a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x618A 10484 bytes
SHA-256: 2083656a034ed171a2c40ce1b3519251a8158d27901eb56bda2b34612ced1860
font_02_sfnt_off0000857a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x857A 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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