Malicious PDF — malware analysis report

Static analysis result for SHA-256 864c45a810255933…

MALICIOUS

PDF

40.6 KB Created: 2020-07-08 16:18:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e3b45a3b05da3cd409fcd746053f853a SHA-1: af73989c52a09027886a67b69b9c18fbddcb2c62 SHA-256: 864c45a8102559336fe0a4cff2325e35f92fcc590a660972c5890a84c11c1780
184 Risk Score

Malware Insights

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

The PDF contains a large number of embedded URLs, many of which point to external PDF files hosted on disposable domains. One URL, 'https://ttraff.com/wb?keyword=ppg%20sustainability%20report%20pdf', is identified as a known malicious redirector. This suggests the document is part of a link farm designed to manipulate search engine results or distribute malicious content, potentially leading to further compromise.

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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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/wb?keyword=ppg%20sustainability%20report%20pdf
    • http://files.sdsusvo.org/uploads/1/3/0/9/130969386/7bda77e30.pdf
    • http://files.andrewsgroupre.com/uploads/1/3/1/6/131607269/jifonadir-dokapokepagoz-wubafixilenoz.pdf
    • http://files.aseronnyj.com/uploads/1/3/1/6/131607269/jepib.pdf
    • http://files.rebelliousrheaboutique.shop/uploads/1/3/1/4/131406413/2090860.pdf
    • http://files.cliniqueveterinairedecantley.com/uploads/1/3/2/3/132302999/df310.pdf
    • http://files.bookhivebeerclub.com/uploads/1/3/0/9/130969910/f65beae6b726.pdf
    • http://files.valleyrootsfoodhub.com/uploads/1/3/0/7/130740344/fa8b50ce.pdf
    • http://files.ladymillam.com/uploads/1/3/0/9/130969993/jutiwuzezibosuro.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://mopazuj.files.wordpress.com/2020/07/kekiwa.pdf
    • https://momasepitab.files.wordpress.com/2020/07/tajewawawopobivi.pdf
    • https://naxopovo.files.wordpress.com/2020/06/faburuda.pdf
    • https://tejodewawi.files.wordpress.com/2020/07/58106054236.pdf
    • https://zemijedo.files.wordpress.com/2020/06/46763902913.pdf
    • https://sopokep.files.wordpress.com/2020/07/10532512205.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/61086590007.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/rerotapok.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/20931566490.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/70945418412.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005fcd.bin
907d1f05132521d6fe5d4a3d933cf381f0ad63410d1cc86c2c9563078a120545		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5FCD 5332 bytes
font_01_sfnt_off000071f4.bin
4412716f51b37daee0c74186ba551c402c34a6543c894cfb11ed38bfa7f3700c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x71F4 10476 bytes

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