Malicious PDF — malware analysis report

Static analysis result for SHA-256 6618993414bedba6…

MALICIOUS

PDF

41.3 KB Created: 2020-08-04 08:51:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e7d68c2956ac4aff15133453a510621d SHA-1: a2285f357048c3e29b539f6ff5a570670a0f00ab SHA-256: 6618993414bedba6628f93944bc4fe6b9cc69d9a7f31ad5ebe1bff1e10ab53d5
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document contains numerous links, including one to a known malicious redirector, `https://ttraff.ru/pify?keyword=campbell+biology+concepts+and+connections+5th+edition+pdf`. This redirector is likely used to obscure the final destination, which is probably a phishing or malware distribution site. The document body, though heavily obfuscated, contains references to the textbook and the malicious URL, suggesting a lure for users seeking educational materials. The presence of multiple PDF links also indicates a link farm, a common tactic for SEO poisoning to attract victims.

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.ru/pify?keyword=campbell+biology+concepts+and+connections+5th+edition+pdf In PDF document text
    • http://files.mobilecarandrvdetail.com/uploads/1/3/1/4/131406527/9019394.pdfIn PDF document text
    • http://files.koboxingusa.com/uploads/1/3/1/4/131406817/zibaxi-kavakep-piwar.pdfIn PDF document text
    • http://files.shahsart.com/uploads/1/3/2/8/132814930/jupuregak.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/1/0432/6585/1542/files/53676522506.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6536/0034/files/giwagotufad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5442/3464/files/63835883207.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5480/7717/files/vukafuraxufawodaguv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/7520/5288/files/4370713758.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2082/7300/files/47581907397.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9130/4343/files/jafudakagamatawex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/30611133668.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5148/2278/files/43502311083.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kenawuvotijogajutimev.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4859/8678/files/lafotibevetolo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5913/5132/files/bobcat_troubleshooting_manual.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 4

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_off00006144.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6144 5744 bytes
SHA-256: 915a561a607d241276b73f9f1c4649c2984a291cbae3a37c05eb44aa2cf170cf
font_01_sfnt_off000074b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x74B4 10368 bytes
SHA-256: db67d27516de52bd4b1efe020c45247599863184f2af64a110ca78e682528fb2

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