Malicious PDF — malware analysis report

Static analysis result for SHA-256 7f4c1de612a30f99…

MALICIOUS

PDF

36.1 KB Created: 2020-08-01 21:08:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 311f8e4f3c57a650887d389dcdfa9ff8 SHA-1: 7a8665d823ba29cd89b04528583f8e526a8eafa4 SHA-256: 7f4c1de612a30f9948ff31e12b18bf2ca3162bcd23e5bb8afd588fde69488a84
194 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to a redirector service (ttraff.cc) that appears to be part of an SEO link farm. This suggests the document is designed to manipulate search engine results and lure users to potentially malicious content. The ML classifier also strongly indicated 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=solidworks+electrical+routing+tutorial+pdf In PDF document text
    • http://files.triplea-solutions.com/uploads/1/3/2/6/132681392/dibowakesuvatimo.pdfIn PDF document text
    • http://files.nbestimating.com/uploads/1/3/0/9/130969889/b8f35fb0f.pdfIn PDF document text
    • http://files.mkclardy.com/uploads/1/3/1/4/131452842/pemimolerese_nasonugifuforo_xadolapimoloko.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/1/0431/6974/2999/files/26159724976.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0167/5939/files/tanopo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5570/1398/files/wibaloga.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1669/8526/files/wevejomo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4007/9005/files/59194331608.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xoxolesusoziviro.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4790/2629/files/kimijatalazutekavarovilu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8977/2187/files/jadefaler.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9805/3535/files/luduvifujiliwew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9748/9572/files/98453638153.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7245/3797/files/98264158999.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2567/7992/files/vavagimokiromasusimozabag.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 5

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_off00004d6f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4D6F 5580 bytes
SHA-256: b0295118975870d0e0615e34aa635ffaf9414c05665f5545b7909e53b41dbbda
font_01_sfnt_off00006092.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6092 10168 bytes
SHA-256: 5fd031a6639c13a6865519a6369e72e637de1fb50ec38bb4c9fd60842477417f

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