Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ccec7ff37b24841…

MALICIOUS

PDF

38.7 KB Created: 2020-08-31 06:26:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e90535589f07d19e9361320a07b0f789 SHA-1: 962c2ee92f1ed358438a3ca4cbcb9fc38ffa41e7 SHA-256: 0ccec7ff37b2484193ed74fd458d0f70e611539b11f058b376a301fa8d13e535
154 Risk Score

Malware Insights

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

The PDF contains embedded URLs and a document body that attempts to trick the user into clicking a link for 'street fighter rom download'. The primary URL, https://ttraff.com/wix?keyword=street+fighter+rom+download, is flagged as a malicious redirector. The PDF also contains a large number of other embedded links, suggesting a link farm or SEO poisoning tactic. No scripts were extracted, but the presence of malicious redirector links and the lure content strongly indicate a phishing or malicious redirection attempt.

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.com/wix?keyword=street+fighter+rom+download
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static.usrfiles.com/ugd/5ad03d_3e27d920581d46f982f1a75386e5c819.pdf
    • https://static.usrfiles.com/ugd/b8c837_7d907472fcd54df29e0c118fb13c0739.pdf
    • https://static.usrfiles.com/ugd/b8c837_0a815f1c94a646da9e100c5efe8612e0.pdf
    • https://static.usrfiles.com/ugd/136d07_59fc803400b048ab8fe241121334dc3c.pdf
    • https://static.usrfiles.com/ugd/8e1900_f5b6355611a145c6b0b83ff302665efb.pdf
    • https://cdn.shopify.com/s/files/1/0433/4750/9416/files/givazidetalabipukofowirig.pdf
    • https://cdn.shopify.com/s/files/1/0428/3462/4668/files/cell_reproduction_mitosis_and_meiosis_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0431/2278/6466/files/hr_operations_manager_interview_questions_and_answers.pdf
    • https://cdn.shopify.com/s/files/1/0433/2496/5019/files/alita_battle_angel_game_apk.pdf
    • https://cdn.shopify.com/s/files/1/0434/2281/0263/files/tutorial_guide_to_autocad_2016.pdf
    • https://cdn.shopify.com/s/files/1/0433/6694/0828/files/vulivufedazukutozubapo.pdf
    • https://cdn.shopify.com/s/files/1/0428/4894/4295/files/lovely_billie_eilish_instrumental_ringtone.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_off00004b0e.bin
09b6977ad27892442e9cc84aab284b24bc8646b6d0cad03c7c5cde0df1a4d50a
pdf-font-stream PDF embedded font (sfnt) at offset 0x4B0E 5336 bytes
font_01_sfnt_off00005d21.bin
adc7a9df7b0cc63737d393715f1593925e4f3034942a5ccab10cb406740a4c28
pdf-font-stream PDF embedded font (sfnt) at offset 0x5D21 15368 bytes