Malicious PDF — malware analysis report

Static analysis result for SHA-256 d1ae318990feea05…

MALICIOUS

PDF

37.6 KB Created: 2020-08-01 11:10:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d6b57e51d30287de114b8898268e4e1e SHA-1: f951d5039829862ddc065749b09c7ce5d42cff25 SHA-256: d1ae318990feea0543177b0df74ef9ebf653030cce8cb4b9f893c42ea5b03fa4
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Phishing: Spearphishing Attachment T1059.001 Command and Scripting Interpreter: PowerShell

The PDF contains a link to a known malicious redirector, ttraff.cc, which is designed to lure users with a "recount wow addon" pretext. The file also hosts a large number of other PDF files on Shopify domains, suggesting a link farm for SEO poisoning or traffic generation. The ML classifier strongly flagged this PDF as malicious, supporting the conclusion that it is part of a phishing or redirection scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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=recount+wow+addon
    • http://files.katiegage.com/uploads/1/3/2/7/132740880/zafojovejinutaf.pdf
    • http://files.theartfulclarke.com/uploads/1/3/1/6/131637186/9058285.pdf
    • http://files.otterworksusa.com/uploads/1/3/1/4/131437351/tasegus-rekafi-zeganusisaj-jigavulef.pdf
    • https://cdn.shopify.com/s/files/1/0429/8070/4405/files/wunelulerovubo.pdf
    • https://cdn.shopify.com/s/files/1/0432/8351/3494/files/migogisidigiteb.pdf
    • https://cdn.shopify.com/s/files/1/0432/2610/3971/files/62139256425.pdf
    • https://cdn.shopify.com/s/files/1/0434/5122/0124/files/panidipavavezekat.pdf
    • https://cdn.shopify.com/s/files/1/0435/5214/5560/files/75155589618.pdf
    • https://cdn.shopify.com/s/files/1/0440/5932/8662/files/nejijib.pdf
    • https://cdn.shopify.com/s/files/1/0431/8203/1007/files/genolagurakozepamug.pdf
    • https://cdn.shopify.com/s/files/1/0435/8579/8301/files/55586530725.pdf
    • https://cdn.shopify.com/s/files/1/0434/6331/1513/files/7564104777.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/galuta.pdf
    • https://cdn.shopify.com/s/files/1/0430/7392/9378/files/tivemivula.pdf
    • https://cdn.shopify.com/s/files/1/0428/3629/5836/files/sony_vio_recovery_disk.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/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000568d.bin
c11ee428aed4b42cabab7987846c6f9f05fffc9cbbedb6d23e8e8569b35390d1
pdf-font-stream PDF embedded font (sfnt) at offset 0x568D 4728 bytes
font_01_sfnt_off000066cd.bin
553c3d811c188798ba6f6335b63dd44066b71a28ae05671ecd23aba2dab84671
pdf-font-stream PDF embedded font (sfnt) at offset 0x66CD 10360 bytes