Malicious PDF — malware analysis report

Static analysis result for SHA-256 5591a1e3642ec382…

MALICIOUS

PDF

38.8 KB Created: 2020-08-02 23:19:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 774af78ea2ff8fc2b49dc5a48ccaa521 SHA-1: 81d471bc2cafaeb495fca669c385a9b7b1fcc49b SHA-256: 5591a1e3642ec3825be8ae473e46856ee1222dd2a6ebc97db25efe656b7cfcc2
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file was identified as malicious due to the presence of a large number of external links, a technique often used to create link farms for SEO manipulation or to redirect users to malicious sites. One critical heuristic firing points to a link to known malicious redirector infrastructure at 'https://ttraff.cc/pify?keyword=transformers+mod+1.+7.+10'. The document body contains garbled text but also includes the same URL, suggesting it's an intended part of the lure. No scripts were extracted, but the sheer volume of links and the identified malicious redirector strongly indicate a phishing or malware distribution attempt.

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=transformers+mod+1.+7.+10 In PDF document text
    • http://files.cigdemslankard.com/uploads/1/3/1/6/131606758/63ca6.pdfIn PDF document text
    • http://files.necropheliaclothing.com/uploads/1/3/2/6/132681033/9056856.pdfIn PDF document text
    • http://files.susanlane-gardenscapes.com/uploads/1/3/0/7/130740530/puramutisigema-ridife-tolifojobifa-teregaximo.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/1/0431/2514/5760/files/vepegubegufegiti.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3698/2943/files/71160957558.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3495/9263/files/7421220508.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5928/1061/files/ziserebibitonemigegeki.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3662/2498/files/nami_pro_builds.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/zorugeligix.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0583/6438/files/troy_bilt_super_tomahawk_chipper_shredder_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8054/8503/files/sosurajiwimomalefarafi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8893/7120/files/kafesirap.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6706/4998/files/57732499706.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_off00005a6e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A6E 5276 bytes
SHA-256: 58deec7c08430e375ffb0c0dbbf854715559888dc185e42f8b3a605b42097990
font_01_sfnt_off00006c53.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C53 10008 bytes
SHA-256: 22cb9b8735eb10f203cce763442d7f1d5b93a5b427e5774b3f6b6d311865c6bc

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