Malicious PDF — malware analysis report

Static analysis result for SHA-256 216a7b20f0695023…

MALICIOUS

PDF

38.5 KB Created: 2020-09-17 16:41:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 98f88e99e0eed0df2f7f49b34c1b7989 SHA-1: 1a9d554060b2330ecc7403e52567467958d9b543 SHA-256: 216a7b20f06950232362469f83e5c0e4145ca8c6fbc8346598fcb2ab45983eb3
150 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'ttraff.club'. This indicates an attempt to direct users to a malicious site, likely for phishing or malware distribution. The presence of numerous other PDF links, many hosted on Shopify, suggests a link farm or SEO poisoning tactic to obscure the malicious destination. No scripts were extracted, and the document body was heavily obfuscated, limiting further analysis of the exact lure.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.
  • 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.club/wix?keyword=njrotc+uniform+measurements+female
    • https://cdn.shopify.com/s/files/1/0436/0683/5358/files/house_bill_of_lading.pdf
    • https://cdn.shopify.com/s/files/1/0437/0884/2152/files/xunofobodafawole.pdf
    • https://cdn.shopify.com/s/files/1/0431/5827/4205/files/newspaper_template_for_students.pdf
    • https://cdn.shopify.com/s/files/1/0433/9469/5324/files/luwuwena.pdf
    • https://cdn.shopify.com/s/files/1/0463/5338/3581/files/zepalozexo.pdf
    • https://cdn.shopify.com/s/files/1/0451/6475/7146/files/wukalu.pdf
    • https://cdn.shopify.com/s/files/1/0432/3767/1075/files/17607060392.pdf
    • https://cdn.shopify.com/s/files/1/0432/3858/8573/files/ielts_band_9_essay_samples.pdf
    • https://cdn.shopify.com/s/files/1/0438/6376/9243/files/aadukalam_bgm_theme_music_free.pdf
    • https://0168de7b-bdef-46dc-9bcc-6689a1ca7a9d.filesusr.com/ugd/a43ec6_aaa1eec2c2b3494297bc07b5b1d74f8b.pdf?index=true
    • https://647cec0d-d341-438f-a0e6-a29e9c4622c1.filesusr.com/ugd/ab0441_1ed1cb0ffa2a499cb9f7a49042f37425.pdf?index=true
    • https://02e6b3b0-7fdd-4420-95e3-c1e8daabd8b9.filesusr.com/ugd/2b3f46_cf12bcd0e22945428e664c7447f824ef.pdf?index=true
    • 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/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005979.bin
074ec7155b3207e3cfad1ee01af621f8963fc39f934f65b2bbb2d9ff5fac4291		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5979 5072 bytes
font_01_sfnt_off00006aa7.bin
159dd118293baf771099521132a22d4cbc3932a4c01ebdbc9a383937c227a634		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6AA7 10128 bytes

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