Malicious PDF — malware analysis report

Static analysis result for SHA-256 c82bf6b16b58563f…

MALICIOUS

PDF

40.7 KB Created: 2020-08-05 09:46:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 62d7ac837df454eea19120d19acebe0e SHA-1: ffb3da6cf3b585ff1defe6bcfa8bdb37bea16694 SHA-256: c82bf6b16b58563f8dee3fbacc3047221f2c54efb9804d5307c461c823381de2
194 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with many links pointing to benign Shopify URLs but one critical link to a known malicious redirector infrastructure at `https://ttraff.cc/pify?keyword=wild+animal+worksheets+pdf`. This suggests the document is designed to lead users to malicious sites under the guise of providing worksheets.

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=wild+animal+worksheets+pdf In PDF document text
    • http://files.theedgecenter.net/uploads/1/3/1/4/131408942/tegez_rovag.pdfIn PDF document text
    • http://files.casting4growth.com/uploads/1/3/1/4/131453333/kozavaraduvive_motololiza.pdfIn PDF document text
    • http://files.protegearts.com/uploads/1/3/2/6/132696512/4978113.pdfIn PDF document text
    • http://files.barrygjohnsonsr.com/uploads/1/3/2/8/132815181/1087955.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/1/0428/0143/0695/files/bitud.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/sejil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2560/3488/files/applied_spatial_analysis_with_r.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4651/0504/files/38874447653.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5326/1724/files/47149934361.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6392/7206/files/13036097133.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4296/3613/files/peptic_ulcer_disease_guidelines.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6811/2550/files/11930585166.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6117/4687/files/bomifew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9150/1990/files/wedusejisosuvevo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0151/2090/files/17645145260.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_off000060eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60EB 5448 bytes
SHA-256: ec678fee3ef16f5e401336a8cbdd19d45c11bd341ded2c1ecba97970d094eba1
font_01_sfnt_off00007363.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7363 10132 bytes
SHA-256: 8e8a3a6503a29ba923f3ae5bc2c49e9c83df24e095756b97b02123e1612fcaec

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