Malicious PDF — malware analysis report

Static analysis result for SHA-256 76013b2dd72bf3c7…

MALICIOUS

PDF

42.0 KB Created: 2020-08-01 13:52:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6eadd816624998a570e4ba4b0bce90c4 SHA-1: 610ce1300e88d2324c8b039bd442bdbed0f8d285 SHA-256: 76013b2dd72bf3c7b06f421f6b9f4ad89a52f9108581b0b9dffecb96dd412477
214 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF contains multiple embedded links, including one pointing to a known malicious redirector at 'ttraff.com'. The document body also contains text and URLs consistent with a payment redirection lure, suggesting an attempt to trick the user into changing payment details or making fraudulent transactions. The presence of numerous external PDF links further indicates a link farm or redirection strategy.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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.com/pify?keyword=form+nys-+45
    • http://files.paragliding-in-interlaken.com/uploads/1/3/2/6/132696335/xupiwewon.pdf
    • http://files.bobwang1991.com/uploads/1/3/1/1/131164159/290faeab693.pdf
    • http://files.kirtanyogachristchurch.com/uploads/1/3/1/6/131606697/kigosip.pdf
    • http://files.peanutandpiglet.co.uk/uploads/1/3/1/4/131407692/vuzupubexawavekivipe.pdf
    • http://files.sarssm.org/uploads/1/3/0/9/130969699/ritebakaji_tejejupon.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0433/2371/9845/files/67889106277.pdf
    • https://cdn.shopify.com/s/files/1/0437/7572/1633/files/78977309525.pdf
    • https://cdn.shopify.com/s/files/1/0428/7922/1919/files/polaris_3900_sport.pdf
    • https://cdn.shopify.com/s/files/1/0428/6647/5174/files/96245598185.pdf
    • https://cdn.shopify.com/s/files/1/0433/9793/9361/files/jited.pdf
    • https://cdn.shopify.com/s/files/1/0435/8239/0431/files/11635770648.pdf
    • https://cdn.shopify.com/s/files/1/0430/3853/9927/files/warakema.pdf
    • https://cdn.shopify.com/s/files/1/0433/5117/9416/files/mubanen.pdf
    • https://cdn.shopify.com/s/files/1/0432/4478/1735/files/2403984711.pdf
    • https://cdn.shopify.com/s/files/1/0435/3500/7893/files/pudigajo.pdf
    • https://cdn.shopify.com/s/files/1/0432/8043/3302/files/37372406047.pdf
    • https://cdn.shopify.com/s/files/1/0433/6245/1611/files/vomajosijigaberadimamapat.pdf
    • https://cdn.shopify.com/s/files/1/0432/1899/3307/files/33780789814.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_off000065a7.bin
d9434a73e34b6f1736e400ae5236e6e20b4a8d49fffe5f1ab80fe91953100fde		 pdf-font-stream PDF embedded font (sfnt) at offset 0x65A7 4888 bytes
font_01_sfnt_off00007655.bin
57a5f321390276eab68950de6674945934c473f08b2ad83a8fd05cfa6270dcad		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7655 10908 bytes

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