Malicious PDF — malware analysis report

Static analysis result for SHA-256 4f4ba1e94039e0f3…

MALICIOUS

PDF

47.2 KB Created: 2020-08-09 13:00:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 9ecc6a8d27f810ee899b90656878665c SHA-1: 8e8a0df981c046055e6f21030f90f4aeb22d033b SHA-256: 4f4ba1e94039e0f302c53213c31b9d94997874c6eba26e66c1d9285e46f184dc
194 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by an ML classifier and contains a link to a known malicious redirector. It also features a large number of external links, many hosted on Shopify, suggesting a link farm or SEO manipulation tactic. The primary malicious URL identified is https://ttraff.com/pify?keyword=sample+bio+pdf, which likely serves as a gateway to 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=sample+bio+pdf In PDF document text
    • http://kegajet.antonu3a.org/uploads/1/3/1/4/131407406/nesifa.pdfIn PDF document text
    • http://files.crowningtouchnails.com/uploads/1/3/0/7/130775373/90806db5bd92aa6.pdfIn PDF document text
    • http://files.jollygeographer.com/uploads/1/3/1/3/131398385/3770067.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7410/1160/files/diganik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5427/5479/files/jiregugevibafil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1294/8121/files/63517184933.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7542/6722/files/59861042536.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9635/7530/files/63851676531.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9800/4899/files/visual_basic_2010_tutorial.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/7027/4201/files/78683993878.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3295/2477/files/3654396595.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2496/5019/files/bujokinedojifomu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3817/7430/files/64129171303.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7352/6178/files/77740094048.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9494/1603/files/2d_and_3d_shapes_properties.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 3

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006de3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6DE3 4756 bytes
SHA-256: 7f181eac2ad55c636edb578e48d0200fb1bf4408a2d40997e5254d5b5ee770f1
font_01_sfnt_off00007e03.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E03 10664 bytes
SHA-256: cecfca35a62fe585d991ff588e5d8ed2c18f56800d86ace411a2bbe353eaaf09
font_02_sfnt_off0000a25c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA25C 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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