Malicious PDF — malware analysis report

Static analysis result for SHA-256 63c6cd37e0875194…

MALICIOUS

PDF

44.4 KB Created: 2020-08-14 15:35:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7e03abd563ba92b5b0943ae490700c1a SHA-1: b2580a81249ed616785f939b6da931bc2a696ad3 SHA-256: 63c6cd37e0875194a2faec1ce3c61901caecb8ce4471ce006e1f245966e71c44
174 Risk Score

Malware Insights

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

The PDF document contains a lure, instructing the user to enable content, and embeds numerous links. One of these links, 'https://ttraff.ru/pify?keyword=1+inch+binder+spine+insert+template', is identified as a malicious redirector. The document's structure and embedded links suggest it is part of a link farm or SEO manipulation scheme intended to lead users to malicious sites.

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.
  • Macro/content-enable lure medium SE_ENABLE_LURE
    Document instructs the user to enable macros or editing — a common technique used by malware droppers to bypass Office macro security settings
  • 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.ru/pify?keyword=1+inch+binder+spine+insert+template
    • http://files.carolrivers.com/uploads/1/3/0/7/130774990/1132181.pdf
    • http://files.michaelmorrisnz.com/uploads/1/3/0/9/130969543/316761.pdf
    • http://files.museumtrustee.org/uploads/1/3/0/8/130813757/fugole-dudanalenoxum-numotise-pawuxanobopivi.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0429/6874/4099/files/accounting_basics_uk.pdf
    • https://cdn.shopify.com/s/files/1/0433/1274/2555/files/jozidigebezosolaxelev.pdf
    • https://cdn.shopify.com/s/files/1/0432/2299/1007/files/42341316824.pdf
    • https://cdn.shopify.com/s/files/1/0433/3866/2053/files/12259009416.pdf
    • https://cdn.shopify.com/s/files/1/0434/6393/4105/files/jemonaxiguxero.pdf
    • https://cdn.shopify.com/s/files/1/0431/6663/0037/files/sukikumizusugetu.pdf
    • https://cdn.shopify.com/s/files/1/0437/9371/1265/files/pezedeluwodiragugafon.pdf
    • https://cdn.shopify.com/s/files/1/0434/9041/0658/files/zojomar.pdf
    • https://cdn.shopify.com/s/files/1/0427/8022/9791/files/63084184358.pdf
    • https://cdn.shopify.com/s/files/1/0432/2381/0203/files/dazipabofom.pdf
    • https://cdn.shopify.com/s/files/1/0432/5585/7315/files/27140171859.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_off00007044.bin
95d0a89cfcf6a9ac0c5f676296e51219aa8502bd1e472f2d99c9e3bebe736094		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7044 5412 bytes
font_01_sfnt_off00008268.bin
66c7255e2dbb20aef31c654ad39f20d0a51091e9fc4537e7bf2f4cbd31c0939f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8268 10060 bytes

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