Malicious PDF — malware analysis report

Static analysis result for SHA-256 4ed2ce9205ce6407…

MALICIOUS

PDF

38.1 KB Created: 2020-08-04 16:58:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 813724b1dfc133b98862e68fcadaada1 SHA-1: f0132afcfbd3f95402641bb4b62e7b684bcaaf29 SHA-256: 4ed2ce9205ce6407a5d431f9799bfca9458ad065e857adb82e42851139eb6b93
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 numerous embedded links. One critical heuristic flagged a link to a known malicious redirector infrastructure at 'ttraff.com'. Another critical heuristic indicated a PDF link farm, with many links pointing to external PDF files hosted on domains like 'cdn.shopify.com' and others. The document body contains garbled text and a URL that appears to be part of the link farm. The primary attack pattern involves leveraging these links, likely for SEO manipulation or to distribute further malicious content.

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/pify?keyword=an+underground+education+richard+zacks+pdf In PDF document text
    • http://files.backwoodsdogboxes.com/uploads/1/3/1/3/131398097/a1b1f66758.pdfIn PDF document text
    • http://files.randjcoachesltd.co.uk/uploads/1/3/1/3/131381480/9059815.pdfIn PDF document text
    • http://baxiluw.engagementlearningpress.com/uploads/1/3/1/3/131383297/28fb051.pdfIn PDF document text
    • http://files.bolbi-edu.org/uploads/1/3/2/6/132681882/nirijiwawijikawali.pdfIn PDF document text
    • http://files.grace-truthchurch.com/uploads/1/3/1/4/131454143/589480.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/1/0431/0315/8433/files/fojizeveneda.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4419/2935/files/dijajemaxarologovaxudakot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4755/0119/files/tecumseh_carb_adjustments.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8617/5651/files/77162337663.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7929/3338/files/tuxexawopewiforolivosadoj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6909/5590/files/7558176001.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5179/5107/files/vusoni.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2033/6807/files/rogesediliwob.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0009/4112/files/bizobomosituvimoluroparit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6200/9755/files/delid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1883/0492/files/8738186068.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_off000054af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x54AF 5488 bytes
SHA-256: 8f0e00676055af367370b4e88529fcbf02e9ff9a569f6f86fb3df4195dfd9bd4
font_01_sfnt_off00006765.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6765 10652 bytes
SHA-256: 8c6d85e56239abeed3a291318485b584ae778c3047be2676706ff2a641753c4f

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