Malicious PDF — malware analysis report

Static analysis result for SHA-256 787372d7cbc5f5c7…

MALICIOUS

PDF

39.1 KB Created: 2020-08-29 22:53:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2eaa8c0c696be5cc3eeb766a7aad73ee SHA-1: 6c7127c2ad0548e3ab7dfbdee7532757e1f81683 SHA-256: 787372d7cbc5f5c790b468b74e1b14e41e8351f4c90d0a9886260a34ba1b4c43
154 Risk Score

Malware Insights

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

The PDF contains embedded links, including one to a known malicious redirector at 'ttraff.com'. The document body, though heavily obfuscated, contains text related to 'Genuphil tablets side effects' and the malicious URL, suggesting a lure for users. The presence of numerous Shopify links, while mostly benign, contributes to a link farm tactic. No scripts were extracted, but the PDF structure and malicious link indicate a phishing or 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=genuphil+tablets+side+effects
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/rijakilijupefiwopoxafeza.pdf
    • https://cdn.shopify.com/s/files/1/0463/4499/4973/files/bilidazugikovutegoda.pdf
    • https://cdn.shopify.com/s/files/1/0435/7488/6563/files/44806117974.pdf
    • https://cdn.shopify.com/s/files/1/0433/3905/5258/files/rogaxi.pdf
    • https://cdn.shopify.com/s/files/1/0433/9394/1671/files/fumimogitopuditijoba.pdf
    • https://cdn.shopify.com/s/files/1/0448/0398/1463/files/aines_durante_el_embarazo.pdf
    • https://cdn.shopify.com/s/files/1/0457/7643/7414/files/limiting_reactant_questions_and_answers_gcse.pdf
    • https://cdn.shopify.com/s/files/1/0433/0009/4112/files/xebujot.pdf
    • https://cdn.shopify.com/s/files/1/0439/4395/2539/files/caseinato_de_sodio.pdf
    • https://cdn.shopify.com/s/files/1/0437/4786/8826/files/68694267199.pdf
    • https://cdn.shopify.com/s/files/1/0428/6644/2406/files/bijararusigimosujuxo.pdf
    • https://cdn.shopify.com/s/files/1/0440/6162/2437/files/gikosurumod.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_off00005ad6.bin
631e82cd7095133c7bae35df788cec71622602d252b527a350b821b3fc6959d5
pdf-font-stream PDF embedded font (sfnt) at offset 0x5AD6 5316 bytes
font_01_sfnt_off00006cd9.bin
079bcfe10aa12a1ac386327904d0702d62149d3edf7f624d17806c103159d7b6
pdf-font-stream PDF embedded font (sfnt) at offset 0x6CD9 10292 bytes