Malicious PDF — malware analysis report

Static analysis result for SHA-256 d03f7b78bc8500d4…

MALICIOUS

PDF

42.1 KB Created: 2020-08-02 17:09:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d6f5f53f8cbaa9ed01c5dc1d97a03028 SHA-1: 4f996ab67e982f24b76973fb4d6459928dc4fbf8 SHA-256: d03f7b78bc8500d495cc7a1edc2253477c747e277cf7d2e63da92acf26680edb
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a link farm and a direct link to a known malicious redirector, 'https://ttraff.cc/pify?keyword=how+to+install+xv2+mods'. This suggests the document's primary purpose is to redirect users to malicious infrastructure, likely for further exploitation or phishing. The ML classifier strongly supports the malicious nature of this PDF.

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=how+to+install+xv2+mods
    • http://files.kinderdanceaustin.com/uploads/1/3/1/3/131398366/8967409.pdf
    • http://files.orangewillowdesignsllc.com/uploads/1/3/0/8/130873708/romefuxamilut_gasilobiti_ridaf_dugepur.pdf
    • http://files.anchoredhomedesigns.com/uploads/1/3/0/7/130739922/834097.pdf
    • https://cdn.shopify.com/s/files/1/0438/9886/3771/files/79475769935.pdf
    • https://cdn.shopify.com/s/files/1/0428/4186/6403/files/zugowexevux.pdf
    • https://cdn.shopify.com/s/files/1/0433/7447/7464/files/51460352965.pdf
    • https://cdn.shopify.com/s/files/1/0437/9095/8749/files/72274681537.pdf
    • https://cdn.shopify.com/s/files/1/0431/6299/2795/files/xewulubu.pdf
    • https://cdn.shopify.com/s/files/1/0439/9045/0334/files/jagedeziwixizanilu.pdf
    • https://cdn.shopify.com/s/files/1/0430/3051/1779/files/6103151748.pdf
    • https://cdn.shopify.com/s/files/1/0428/9898/1030/files/jejokixaxizopexo.pdf
    • https://cdn.shopify.com/s/files/1/0439/0617/1048/files/marotum.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_off0000664e.bin
ad4ab6bace66c09b864fa3cdcea045e07f035aeaaef50615236a2fd31d6e5ad2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x664E 5188 bytes
font_01_sfnt_off000077fb.bin
6a66bb6abb73c4e46b4714fbe2c63c0ab210347d6a254f890f651e6d21d1295e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x77FB 10632 bytes

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