Malicious PDF — malware analysis report

Static analysis result for SHA-256 5167a59acfdc3342…

MALICIOUS

PDF

45.3 KB Created: 2020-08-02 05:21:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 005d6cbc088dc1b0f0d626ad1312a11f SHA-1: b203ccfd29ed1305f1dee2f7b9677d8c33035948 SHA-256: 5167a59acfdc3342db05db40050809e7e546775ac0f339661c1151bf06944364
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 a critical heuristic firing for a malicious redirector link to 'ttraff.cc'. The document body, though partially garbled, contains text related to 'Kb to mb' and includes the malicious URL. This suggests the PDF is designed to trick users into clicking the link, likely leading to further malicious content or phishing attempts.

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=kb+to+mb In PDF document text
    • http://files.sylverdesign.com/uploads/1/3/1/6/131606331/88d7deba1b8da3f.pdfIn PDF document text
    • http://files.communitybaptistcoldlake.com/uploads/1/3/0/7/130739072/benisulujol_zekasanatina.pdfIn PDF document text
    • http://files.kmcauthor.com/uploads/1/3/1/4/131408913/gujutopi.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/1/0434/5187/5481/files/17179823481.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0935/1575/files/raferabolinodulezomud.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/5122/7038/files/roxulirivurekinosu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4385/5258/files/timofosiwi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5511/9520/files/41144547029.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0934/2621/files/54726347502.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8421/8532/files/51138065453.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8439/9270/files/77204926272.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6108/3301/files/40464469274.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5064/7202/files/26043460711.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4222/5832/files/wizakijividiv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4227/5485/files/epic_care_presence.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/1607/4902/files/53104614462.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1024/3229/files/dadik.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_off00006900.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6900 4424 bytes
SHA-256: c7df6e08a9dfa56ac13d8cc2c2dc6a16f52001ebfcafff822b37761f0e55d5e8
font_01_sfnt_off00007805.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7805 15076 bytes
SHA-256: 0878377f33b33eee4f030bca98d79c66a24aebbd36bac9f6749b1788bd9cd7f6

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