Malicious PDF — malware analysis report

Static analysis result for SHA-256 07af471823fb1bf6…

MALICIOUS

PDF

42.3 KB Created: 2020-08-06 09:48:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fb1cf370dab32c964f4f5b8ffae12ac9 SHA-1: 33b15459b48092a9c15f14678e328e2e05bdd2bf SHA-256: 07af471823fb1bf6146687c95e720c15be64c1ef00ab01f8218f98c5550641f3
194 Risk Score

Malware Insights

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

The PDF contains a lure related to financial transactions, directing users to a malicious redirector. The heuristic 'SE_PAYMENT_REDIRECT_LURE' strongly indicates a business-email-compromise pattern. While no scripts were explicitly extracted, the PDF structure and embedded links suggest an attempt to redirect users to potentially malicious content, likely hosted on the Shopify domains or the ttraff.cc redirector.

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.
  • Payment redirection / bank-detail change lure high SE_PAYMENT_REDIRECT_LURE
    Document describes new or changed bank, wire, ACH, IBAN, SWIFT, or routing instructions — a high-value business-email-compromise pattern
  • 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=financial+accounting+journal+entries+pdf
    • http://files.rogercoss.com/uploads/1/3/0/7/130738875/vavolupabukar.pdf
    • http://files.reikifortheplanet.com/uploads/1/3/2/3/132302815/5645773.pdf
    • http://files.ostrichcolonyfilms.com/uploads/1/3/1/6/131636692/6742454.pdf
    • http://files.sciotoheritagetrail.com/uploads/1/3/1/3/131380029/cf218b32.pdf
    • http://files.cococollections.net/uploads/1/3/1/8/131856290/f37f643020f.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0432/2649/7182/files/makikuset.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/zekimopesafirizaxos.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/ruwisosipopiwusanitilowaz.pdf
    • https://cdn.shopify.com/s/files/1/0429/2739/0887/files/sowotukezepul.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/gowavofopinesifaremoka.pdf
    • https://cdn.shopify.com/s/files/1/0433/6690/8054/files/pekawemebomasujalesedo.pdf
    • https://cdn.shopify.com/s/files/1/0437/4154/4599/files/47336928082.pdf
    • https://cdn.shopify.com/s/files/1/0434/0921/1557/files/jabopimafaxidewamaso.pdf
    • https://cdn.shopify.com/s/files/1/0435/4942/5823/files/cosatu_policies_and_political_affiliations.pdf
    • https://cdn.shopify.com/s/files/1/0430/5007/4269/files/22605601243.pdf
    • https://cdn.shopify.com/s/files/1/0433/4272/5275/files/27688019385.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_off00006679.bin
f3b596f88672348ac363d206c922778ab0b4e0bc8bed55d695d3e61e2b0fdaae		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6679 5356 bytes
font_01_sfnt_off000078c3.bin
3406981ab5b925e72d59051aa023a76ad4d66501caf1ce5072776bafa69855e7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x78C3 10264 bytes

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