Malicious PDF — malware analysis report

Static analysis result for SHA-256 65126e9a3bf68b3f…

MALICIOUS

PDF

58.8 KB Created: 2020-07-27 16:01:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b638c0142f05d27e721e7696051a36b1 SHA-1: ee626e6443d9e74542baa1e452d352c1ac4f404c SHA-256: 65126e9a3bf68b3ff1484b3128a9a0af375d5df1b016befcc0f7227d3a96096a
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple heuristics indicating it's a malicious redirector, specifically linking to 'ttraff.com' which is flagged as malicious. It also hosts a large number of external PDF links, suggesting a link farm or SEO abuse tactic. The ML classifier strongly supports the malicious verdict.

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=biglybt+android+tv In PDF document text
    • http://files.catyoung.net/uploads/1/3/2/3/132302736/sirumu.pdfIn PDF document text
    • http://files.buypolarxtracts.com/uploads/1/3/2/6/132681836/3947574.pdfIn PDF document text
    • http://files.willisband.org/uploads/1/3/0/8/130874683/denim-pizorikur-nepupigasetibul.pdfIn PDF document text
    • http://files.enfieldover50scommunity.org/uploads/1/3/0/9/130969514/6524080.pdfIn PDF document text
    • http://files.iolascott.com/uploads/1/3/1/4/131437822/kavowowebogofulubez.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/1/0430/4430/7098/files/gozowereforagunal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5649/6791/files/zosafozemojima.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2956/0481/files/dinexafozawefisegenezawo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8919/9268/files/pojapaxokaxejapo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/4029/8392/files/22215389160.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4466/7553/files/17749359517.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4021/1097/files/23687737692.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9073/8328/files/vefefunedodopulelupimuna.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0988/4838/files/85408465013.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7560/9510/files/tesexejogokawekarefaromu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/fokadexowigexavutezirero.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3452/6375/files/68917760954.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007e25.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E25 4836 bytes
SHA-256: 7a10c6b1fa0af28548245893f7d603a15952e6d661b6d6fa684220809649c7a7
font_01_sfnt_off00008e8e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E8E 1952 bytes
SHA-256: 922c47e0ec4f2f735f6b739d39b64ee041b9e46e2eec7850f5ca67717fd54a10
font_02_sfnt_off000097ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x97EF 15184 bytes
SHA-256: 4e72e011bb0a6c6ef5da543372469d6c0c6f5d5eb9cab166ed1546cbb4cf31ff
font_03_sfnt_off0000c74f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC74F 16372 bytes
SHA-256: eec25c4d6e5c88313fe03ada1d381cd161bf7ad9ce68f8e69f9ca10c06e0010d