Malicious PDF — malware analysis report

Static analysis result for SHA-256 7b6c70f3b82adc94…

MALICIOUS

PDF

45.3 KB Created: 2020-08-26 09:45:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 935518c06be9a0fc8789dbd39d46bc29 SHA-1: 17ee180c92494196c48d7b77ae5df156638da8b9 SHA-256: 7b6c70f3b82adc946591b000a46b21bdb7e950747c03bdb7631ec2b6d5b8829b
214 Risk Score

Malware Insights

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

The PDF contains a malformed stream and numerous embedded links, many pointing to a redirector service (ttraff.com) which is known for malicious activity. The document body and embedded links suggest a phishing or SEO manipulation tactic, aiming to drive traffic to potentially malicious content. The ML classifier strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Malformed active-content stream length medium PDF_MALFORMED_EXPLOIT_STREAM_LENGTH
    A PDF stream that carries active/exploit-looking content has a declared /Length that does not match the recovered stream body. Malformed stream boundaries and length mismatches are common parser-evasion/supporting evidence around Reader exploit streams.
  • 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=canal+de+distribucion+detallista In PDF document text
    • http://files.ectorbio.com/uploads/1/3/1/3/131379382/nadufuruxozu.pdfIn PDF document text
    • http://files.salonargio.com/uploads/1/3/1/4/131483148/kekemedotowix.pdfIn PDF document text
    • http://files.proplayhockey.ca/uploads/1/3/1/3/131379042/wegebuxani.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/1/0440/0345/9230/files/56640024145.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9925/1093/files/raxoxodikepebozok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5891/3689/files/booster_seat_guidelines_nebraska.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1583/8618/files/27489470545.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9801/3850/files/adrenalina_hipolabor_bula.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5548/0981/files/21228800555.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5467/7662/files/butixejozoj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5703/6968/files/pink_ward_shaco_guide_season_8.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0449/6978/7560/files/movixo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3797/2897/files/un_amante_de_ensueo_sherrilyn_kenyon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2379/4339/files/geveterenezid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/669297692.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_off000071aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x71AA 4980 bytes
SHA-256: 03c247ed300391b52b401c736b681bcb85a9e40b741514528b18c11280f33070
font_01_sfnt_off00008295.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8295 11152 bytes
SHA-256: 98cb41742e8301488bb1d3c2832801b718612d1a152a52e447f83db3303d55bc

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