Malicious PDF — malware analysis report

Static analysis result for SHA-256 15fbce689d5fc415…

MALICIOUS

PDF

52.1 KB Created: 2020-08-21 20:10:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 85c1c573eddc7806b13483f1d52a7534 SHA-1: 52250d82e3ad8c605c55b354e2eff12df729e50f SHA-256: 15fbce689d5fc415771f75e8e32d51313f99b53967c341075b55e49dad98cc48
194 Risk Score

Malware Insights

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

The PDF contains embedded links that point to a known malicious redirector, ttraff.ru, which is part of an SEO link farm. The document body, though partially corrupted, suggests a lure related to 'charity commissioner forms in marathi' to entice users to click the malicious link. The ML classifier also strongly indicated maliciousness.

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=charity+commissioner+forms+in+marathi In PDF document text
    • http://files.team-griffin.net/uploads/1/3/0/7/130776037/5e4b2f665dbf.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/1/0427/6381/3020/files/12625834374.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8525/9159/files/luridojel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3685/1874/files/afcat_question_paper_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8445/4811/files/61113195180.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6878/4791/files/lesuxupisozigip.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5217/9364/files/cause_and_effect_essay_worksheets.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/0679/3627/files/86618918299.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5949/4560/files/zijer.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5085/2762/files/reputixijemesenazebegen.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3350/9534/files/saxezadasusogavatedo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2267/2284/files/chiari_malformation_type_1_death_rate.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000854e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x854E 2828 bytes
SHA-256: b7f317aa0f29cd34df008dc84d8f376d2685882a57a4a5cd0d86477d0adf885a
font_01_sfnt_off00008f49.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8F49 5096 bytes
SHA-256: e7d163b774c5b2fe8f484069a0be8b0b4c5dd6f439426f7484a27b633000dace
font_02_sfnt_off0000a082.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA082 10296 bytes
SHA-256: 858930663fac4d3516c2d4dc393ede60e9e4445107fc7c4858af99d4d004b320

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