Malicious PDF — malware analysis report

Static analysis result for SHA-256 b8bd92b3d300eb55…

MALICIOUS

PDF

41.4 KB Created: 2020-08-11 16:41:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: bf8164b2ce853f687b0a6b023a28794e SHA-1: 9c61ee945d9c3ab7eff1223638a9af24ee95821d SHA-256: b8bd92b3d300eb55abb919d50db4072c611d14d1ce6354fbb394f8a23fc57dd2
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a significant number of external links, many of which point to PDF files hosted on various domains, including a known malicious redirector. The primary malicious link is https://ttraff.cc/pify?keyword=trox+sound+attenuator+pdf, which likely leads to further malicious content. The presence of a large link farm suggests an attempt to manipulate search engine results or distribute malicious content through seemingly benign links.

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=trox+sound+attenuator+pdf In PDF document text
    • http://tekanu.nikiclainos.com/uploads/1/3/0/8/130874359/2305964.pdfIn PDF document text
    • http://files.bobsbigbuffet.com/uploads/1/3/1/8/131856907/15bc6f253fa899c.pdfIn PDF document text
    • http://files.cubiclesmadenew.com/uploads/1/3/2/6/132683181/4eec8887.pdfIn PDF document text
    • http://files.emilypassic.com/uploads/1/3/1/3/131398059/fixavijufore-xuruvixafupu.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/1/0437/0802/2938/files/argala_stotram_malayalam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9474/6023/files/kipuxu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0450/0160/5278/files/labewodowavesomifu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1026/8064/files/52550788699.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1674/8190/files/foxebezavaxoxume.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7658/2552/files/edward_said_orientalism.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7379/8306/files/cursive_writing_capital_letters.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7573/1607/files/vapegoduliropifak.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2427/7923/files/latelijerumufojixe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/8225/8334/files/67221751782.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4143/1464/files/48438964586.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 1

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_off00006297.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6297 5020 bytes
SHA-256: 44205b53960349b7006ffb96b6caedab0e148175c199479b31fd83ade3bea61c
font_01_sfnt_off000073c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x73C1 11452 bytes
SHA-256: 987c4a2620e4cf1a29f80b3940fa460cbab6e0fed29f73d24a86a0f558d891be

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