Malicious PDF — malware analysis report

Static analysis result for SHA-256 7c8df42e1e8c8433…

MALICIOUS

PDF

41.3 KB Created: 2020-08-06 22:40:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6c6daaa32459a0a26568ed090e2497ba SHA-1: 2105ea58485febeb8add17d55e603e5b53cbef13 SHA-256: 7c8df42e1e8c84332ea9dd04409612511da196ed0caa68b6041bee1adf66c600
194 Risk Score

Malware Insights

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

The PDF contains numerous links, including one to a known malicious redirector at `ttraff.com`. This redirector is likely used to obscure the final destination, which could be a phishing page or a malware download site. The ML classifier strongly indicated maliciousness, and the presence of a link farm suggests an attempt to manipulate search engine results for malicious purposes.

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/wb?keyword=strategic%20cost%20management%20pdf%20notes In PDF document text
    • http://files.marylendway.com/uploads/1/3/0/9/130968984/42be619b.pdfIn PDF document text
    • http://files.observationsandconclusions.com/uploads/1/3/1/4/131453588/17a0e418a.pdfIn PDF document text
    • http://fuzubabub.offthedirtroad.net/uploads/1/3/1/4/131407005/1645806.pdfIn PDF document text
    • http://files.shanghaisimultaneousinterpretationequipment.com/uploads/1/3/1/0/131070859/6beb1b.pdfIn PDF document text
    • http://files.supportiveimmersion.com/uploads/1/3/0/7/130775363/19a58f844281.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/1/0430/3260/8921/files/91474220413.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9988/1639/files/nizopenima.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9969/2958/files/ain_t_no_sunshine_bass_tab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0505/0021/files/65549939990.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1574/0312/files/11725393081.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1460/1378/files/lepigigukamopamipuluwom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0567/2597/files/lunefanenulunusobapur.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9651/4461/files/check_if_homebrew_is_installed.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/babape.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9156/6493/files/boxexoralevukojesaf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2697/0786/files/lange_case_files_emergency_medicine.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_off000063cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63CD 5544 bytes
SHA-256: 21fedd55248992b3364ab39bfa814af8c8230e4bbe44f6440bb6ba82edc0a0cf
font_01_sfnt_off00007698.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7698 9820 bytes
SHA-256: 8b11a92ce707182f648a230d467cd7d0ec6f1a064140765d2a6f26615e40e2e4

Open this report in the interactive analyzer, or submit your own file for analysis.