Malicious PDF — malware analysis report

Static analysis result for SHA-256 6db5fbac7e2affe1…

MALICIOUS

PDF

39.1 KB Created: 2020-08-15 16:44:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: fcd0859419b9dcdfed788ee710811658 SHA-1: e3cdb612c46997c3c24cccc6ccad934f642b9d49 SHA-256: 6db5fbac7e2affe1e4a33b0da7fc92417e23c1821ecf4388bc2962839cbb5bb2
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link farm and a redirector URL, suggesting a phishing or scam attempt disguised as a crossword puzzle answer. The ML classifier strongly indicates maliciousness. The primary malicious URL identified is ttraff.cc, which is used to redirect users 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.cc/pify?keyword=energize+crossword+puzzle+answer In PDF document text
    • http://files.myguttellsme.com/uploads/1/3/2/7/132710786/cb0b21d4e1ff.pdfIn PDF document text
    • http://files.harmonytrainingclub.com/uploads/1/3/0/7/130738607/dujugefugipog_jaloxapavodu_kizodavevawazi.pdfIn PDF document text
    • http://feborosa.saginawcountyreportcard.org/uploads/1/3/2/6/132682790/e3c266.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/1/0435/7675/4344/files/72385627085.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6836/6760/files/65710178134.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4272/5275/files/71530213828.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7487/9641/files/37392315460.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1415/2607/files/human_vascular_system.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1474/0375/files/92301641487.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9762/9596/files/zelivabodafi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5552/0667/files/fuwozuwixikeluvivusuget.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8187/5112/files/sugaluvuninopevig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3287/7975/files/3ds_virtual_console_cia.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/0735/0696/files/open_heaven_2015.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_off00005b92.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5B92 5340 bytes
SHA-256: 3c54865d1e91ad4f62be2826df67d403c5479e20e91c95070e969e155886cfc4
font_01_sfnt_off00006de2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6DE2 9992 bytes
SHA-256: d2f57508fef89ff9a86659cec67a08f30a48d8a7b02d5d7ef691f393ec53ebe1

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