Malicious PDF — malware analysis report

Static analysis result for SHA-256 002c71bb76a4fb44…

MALICIOUS

PDF

56.1 KB Created: 2020-08-16 11:10:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 98864a9d8f132632ccc51095d9fc0e62 SHA-1: 16e19f05d34d9b1605e0642e64ddf01970a1780a SHA-256: 002c71bb76a4fb44de54aa8531ca78252f3aa964e008a757c972e31f5666be11
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains a large number of embedded links, a common tactic for SEO poisoning and redirecting users to malicious sites. One of the primary links, 'https://ttraff.cc/pify?keyword=protestant+center+of+reformation+eu4', is identified as a malicious redirector. The document body, though heavily obfuscated, also contains this URL, reinforcing its role in the attack. The presence of numerous links, including one to a known malicious redirector, strongly suggests a phishing or redirection-based attack.

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=protestant+center+of+reformation+eu4
    • http://files.victoriaedgarr.com/uploads/1/3/0/7/130775434/1978109.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0431/7213/5074/files/5650988917.pdf
    • https://cdn.shopify.com/s/files/1/0432/4311/0555/files/modelo_de_articulo_de_opinion.pdf
    • https://cdn.shopify.com/s/files/1/0434/3106/7813/files/30531312014.pdf
    • https://cdn.shopify.com/s/files/1/0452/7413/6738/files/paul_edwards_encyclopedia_of_philosophy.pdf
    • https://cdn.shopify.com/s/files/1/0429/7264/3491/files/27160338363.pdf
    • https://cdn.shopify.com/s/files/1/0436/0785/1171/files/18055916736.pdf
    • https://cdn.shopify.com/s/files/1/0429/9145/2314/files/43727596049.pdf
    • https://cdn.shopify.com/s/files/1/0432/2865/9874/files/bopugekajotujurelalokiber.pdf
    • https://cdn.shopify.com/s/files/1/0437/1303/6439/files/nijinedegifivog.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_off00009da6.bin
3e5576f3be0df834636f70d73f64312d0627dbd048ebb3182d6997766e0fe757
pdf-font-stream PDF embedded font (sfnt) at offset 0x9DA6 5084 bytes
font_01_sfnt_off0000aed6.bin
4dabc036c35410361bc6c3857efa495c01e80de508f90694e6dc031def539d9a
pdf-font-stream PDF embedded font (sfnt) at offset 0xAED6 10668 bytes