Malicious PDF — malware analysis report

Static analysis result for SHA-256 ba49f4ce0899cb0f…

MALICIOUS

PDF

48.3 KB Created: 2020-08-22 02:23:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ba6eb23d789787f23e6a8f11b6ba699e SHA-1: c4921d87e48519d22a04071b22775a524b2b8f23 SHA-256: ba49f4ce0899cb0fc256616822f024f1cdeef960e57942a4df6b881076c35e77
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains numerous embedded links, with a critical heuristic firing for a malicious redirector pointing to 'ttraff.com'. The document body, though heavily obfuscated, contains text related to 'Yahoo fantasy football' and the malicious URL, suggesting a lure. The presence of a large number of external PDF links, many hosted on Shopify, indicates a link farm designed to obscure the malicious redirector.

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.com/pify?keyword=yahoo+fantasy+football+adp+cheat+sheet
    • http://files.agirlandherphone.net/uploads/1/3/2/6/132681836/sisufavepapike.pdf
    • http://nosasumog.aimeegreenberg.com/uploads/1/3/0/7/130776102/faniraribomegi_buziter_suvijebu_navos.pdf
    • http://files.usuhumanwildlifeinteractions.com/uploads/1/3/0/7/130775222/vafofanudupufag.pdf
    • http://files.journalistatsea.com/uploads/1/3/1/3/131381363/5659167.pdf
    • http://files.ourpeaherpod.com/uploads/1/3/0/8/130813108/sigamaxusiper.pdf
    • https://cdn.shopify.com/s/files/1/0434/2494/0184/files/animales_domesticos_informacion.pdf
    • https://cdn.shopify.com/s/files/1/0437/4413/3281/files/zojifopulukuzonipakidonom.pdf
    • https://cdn.shopify.com/s/files/1/0430/1121/1425/files/construction_material_business_plan.pdf
    • https://cdn.shopify.com/s/files/1/0437/2771/6520/files/great_answers_to_tough_interview_questions_martin_john_yate.pdf
    • https://cdn.shopify.com/s/files/1/0432/1188/2653/files/57809667447.pdf
    • https://cdn.shopify.com/s/files/1/0433/8561/8583/files/xirede.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/nubizasijimowedemo.pdf
    • https://cdn.shopify.com/s/files/1/0440/0149/3142/files/brochure_template_free_vector.pdf
    • https://cdn.shopify.com/s/files/1/0434/4925/4048/files/najojetivabazirog.pdf
    • https://cdn.shopify.com/s/files/1/0433/0763/0747/files/diagramme_de_bode_second_ordre.pdf
    • https://cdn.shopify.com/s/files/1/0431/7147/9709/files/2006078222.pdf
    • https://cdn.shopify.com/s/files/1/0428/7922/1927/files/zurulebenupejekimave.pdf
    • https://cdn.shopify.com/s/files/1/0437/5973/0839/files/88198169497.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/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007d77.bin
c4b5a7bf17a9fc5feb4671d9c2298e9ba9985487633085373550b0093f4510d0
pdf-font-stream PDF embedded font (sfnt) at offset 0x7D77 5352 bytes
font_01_sfnt_off00008fa5.bin
d172c8b7c8bc987d5cfa98a2b59d7804b0128b067ae992d51600a3e466197ffc
pdf-font-stream PDF embedded font (sfnt) at offset 0x8FA5 10744 bytes