Malicious PDF — malware analysis report

Static analysis result for SHA-256 6b210c01c93ebd4f…

MALICIOUS

PDF

38.6 KB Created: 2020-08-20 04:00:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fe962fd9ea70fa81de5e918cf9385fa1 SHA-1: aac5eefc6a9a395c6f146b78dc8324a784366d75 SHA-256: 6b210c01c93ebd4fc0a3741927951c7a361d7ee1b4f56cf6972ee8a82b7d0a06
154 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to potentially malicious redirectors or SEO link farms. The document body, though partially corrupted, suggests a lure related to a 'capability statement consulting template'. The presence of embedded URLs and the ML classifier's high confidence score indicate malicious intent, likely to redirect users to malicious sites or download further payloads.

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=capability+statement+consulting+template
    • http://files.leviathaninc.com/uploads/1/3/1/6/131606262/xupefisesexosu.pdf
    • http://xireni.risisthis.com/uploads/1/3/0/9/130969265/83518e48874292.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0431/8930/5506/files/mera_bhola_hai_bhandari_lyrics_download.pdf
    • https://cdn.shopify.com/s/files/1/0434/2644/7525/files/hdfc_life_sanchay.pdf
    • https://cdn.shopify.com/s/files/1/0431/3012/6496/files/nosimabiw.pdf
    • https://cdn.shopify.com/s/files/1/0437/1054/6071/files/97065911026.pdf
    • https://cdn.shopify.com/s/files/1/0440/7413/9800/files/animation_app_free_for_pc.pdf
    • https://cdn.shopify.com/s/files/1/0433/7529/6670/files/vukakigexibititojofujo.pdf
    • https://cdn.shopify.com/s/files/1/0432/0568/9499/files/sejixedegidil.pdf
    • https://cdn.shopify.com/s/files/1/0431/1888/7068/files/95499495104.pdf
    • https://cdn.shopify.com/s/files/1/0427/8085/2383/files/wondershare_video_converter_mac.pdf
    • https://cdn.shopify.com/s/files/1/0439/4074/1275/files/senil.pdf
    • https://cdn.shopify.com/s/files/1/0431/7921/2959/files/98542248129.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_off00005c45.bin
723d5f4b9dbcde7caa8ddc6b02bfe91612b6320094615595cfb17f9f3757947f
pdf-font-stream PDF embedded font (sfnt) at offset 0x5C45 5304 bytes
font_01_sfnt_off00006e45.bin
d77247bdd80e8c8c34c147733525a4230faa517bf43eed0ff5bb52f729917426
pdf-font-stream PDF embedded font (sfnt) at offset 0x6E45 9208 bytes