Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d002b70dd95e547…

MALICIOUS

PDF

43.5 KB Created: 2020-09-06 01:46:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: bce389507bcff68b7be7e04913d32d43 SHA-1: a2245b56a6eaf181e4f6b95fd5ff2094141b2b10 SHA-256: 5d002b70dd95e547270568e9d34b670c16b3feaa6e30150c9537daf0048bb1bf
234 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.ru'. Additionally, it exhibits characteristics of a payment redirection lure and an MFA/one-time-code harvesting lure, suggesting an attempt to phish for financial or authentication credentials. The embedded URLs and the document body, though partially corrupted, reinforce the redirection attempt.

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.
  • MFA / one-time-code harvesting lure high SE_MFA_LURE
    Document asks for a one-time code, authenticator approval, or MFA confirmation — consistent with credential phishing kits that steal session tokens or abuse multi-factor authentication
  • 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
  • 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.ru/wix?keyword=direct+file+transfer+iphone+to+android In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://static.usrfiles.com/ugd/b8c837_484a27f3d862446b93600196411bce79.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/38955b_52dad0951b3a4107bc1708ef4a2b30e4.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/3aca14_4adbfeafe40249848a64177b87cf5ef0.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/79e0dc_45ac106f9ad8484c8d739f896bf72159.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/a771bd_0fed9939b0764bfda6376fab8edb4adc.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9979/8166/files/character_sketch_of_bluntschli_in_arms_and_the_man.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6031/3768/files/bajrangbali_ka_video.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0460/3310/9156/files/65516216996.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2412/0984/files/mazosasu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5420/2013/files/contemporary_aristotelian_metaphysics.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8039/9513/files/36261917969.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4703/3752/files/93461509055.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8955/1770/files/72593723620.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6050/1407/files/11992745392.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005f04.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F04 5028 bytes
SHA-256: e53e73cdd428e134862dd692c045803d1d4d827cca4d873e38f68bffa7a57bbf
font_01_sfnt_off0000700e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x700E 10356 bytes
SHA-256: 544d8e5083edec799997eae9f3a552a2bae5dc1abf557fe6a60a951209f6d014
font_02_sfnt_off00009341.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9341 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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