Malicious PDF — malware analysis report

Static analysis result for SHA-256 6dbf7f050da45c7e…

MALICIOUS

PDF

127.7 KB Created: 2020-08-10 03:36:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ad2a1f6d6bd395ef9fea14a6487a93b0 SHA-1: b766da88e575800d7aecd4588626f3ee04eaf090 SHA-256: 6dbf7f050da45c7e692592051d70b1e863254b9fe59d4897953cc83b5f3ee020
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, many pointing to a redirector service (ttraff.com) disguised with keywords like 'gloomhaven rules summary pdf'. This indicates a phishing or content-farming scheme. The ML classifier strongly flagged this PDF as malicious, and heuristic rules confirm the presence of malicious redirector links and a link farm.

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=gloomhaven+rules+summary+pdf In PDF document text
    • http://files.magnuskravik.com/uploads/1/3/1/6/131637240/a7656afa846fad1.pdfIn PDF document text
    • http://files.lbpac.org/uploads/1/3/1/4/131407089/369c8c768b2.pdfIn PDF document text
    • http://files.wtd-peru.org/uploads/1/3/2/6/132695701/edb45837c.pdfIn PDF document text
    • http://files.controlcover.com/uploads/1/3/1/0/131071067/bobawolo_femepomufetu_pituli.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/1/0430/3273/9989/files/ramup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9118/9157/files/braco_cable_gland_price_list_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4715/6903/files/11575689348.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5298/9605/files/borulanimidozudig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3314/8062/files/97590688082.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8547/0623/files/2004_vw_beetle_owners_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7981/1750/files/nujizegefobewaxivoze.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8114/6280/files/furumuriz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5778/3718/files/nawewinerobuv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9770/8957/files/centurylink_modem_return.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7580/6119/files/70604397910.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7567/4012/files/lurobaziwek.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001bbe7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1BBE7 5472 bytes
SHA-256: 20fcd308d991f0aef6886ceca836e78ba03690234d3a2692610786b40472df36
font_01_sfnt_off0001ce68.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1CE68 10176 bytes
SHA-256: c74f75e943918d04a880603d767d651e2eb29ccdbe5ff0d64e1f7afd6a579766

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