Malicious PDF — malware analysis report

Static analysis result for SHA-256 60e64fd7323012da…

MALICIOUS

PDF

48.4 KB Created: 2020-08-01 10:53:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: cf3432d5428edefc2322083d798d5d30 SHA-1: 07ee56f8b526bbca1380c2181642f363f0f12f6d SHA-256: 60e64fd7323012da8d4cd7fc5a7dc0b13329b48ddc4db45bb40cd3be177cee05
202 Risk Score

Malware Insights

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

The PDF document contains numerous embedded links, including one pointing to a known malicious redirector, suggesting an attempt to lead the user to malicious websites. The document body and heuristics indicate a lure for an advance-fee scam or a phishing attempt related to 'form 6251'. The presence of many links, some leading to benign Shopify domains and others to unknown domains, suggests a link farm used to obscure the malicious redirector.

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.
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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=what+is+form+6251
    • http://files.westcountryswords.co.uk/uploads/1/3/0/8/130873717/1a9ceb0c.pdf
    • http://files.greatlakescockapoos.com/uploads/1/3/0/9/130969346/2385447.pdf
    • http://files.alessandrobianchetti.com/uploads/1/3/1/6/131607407/nirupeduvumupi.pdf
    • http://files.decaturncc.org/uploads/1/3/1/4/131408942/4011009.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0428/7974/6207/files/desipugesonipukaz.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/39720928980.pdf
    • https://cdn.shopify.com/s/files/1/0431/6200/9760/files/32431793943.pdf
    • https://cdn.shopify.com/s/files/1/0431/9064/8996/files/jujukukomevoborosop.pdf
    • https://cdn.shopify.com/s/files/1/0433/8188/3030/files/pejekipotivoxo.pdf
    • https://cdn.shopify.com/s/files/1/0432/5982/2243/files/nuvekuxe.pdf
    • https://cdn.shopify.com/s/files/1/0434/3264/0664/files/9738167605.pdf
    • https://cdn.shopify.com/s/files/1/0430/5597/2501/files/rawelisegofijex.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/magizokoluredofet.pdf
    • https://cdn.shopify.com/s/files/1/0429/0281/4876/files/bapematepesutoturaletigev.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/58933331969.pdf
    • https://cdn.shopify.com/s/files/1/0430/8788/8545/files/10586026170.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_off00007de6.bin
6a317013da552098e5b0bb2f2e0383b381e80277c8eb2555a223e0b99d1890e0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7DE6 5452 bytes
font_01_sfnt_off0000905c.bin
81af64302b43c698cbeb84bcfce9d62f58b2aa8a53282bc052bf9b47ce0973bf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x905C 10860 bytes

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