Malicious PDF — malware analysis report

Static analysis result for SHA-256 2714d5f271d8f096…

MALICIOUS

PDF

47.8 KB Created: 2020-08-06 22:06:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4339eba94cf85cedeab4be37eedbeef3 SHA-1: 139c6a3092044179e1b442ae52d0e504d4a847ee SHA-256: 2714d5f271d8f096692a8b7a7d437b55159364e792680b7a499ab62651e5ae2e
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'ttraff.cc'. The document body, though heavily obfuscated, contains text related to 'selling on ebay for dummies pdf' and the URL itself, suggesting a lure. The PDF also contains a mass external link farm, with many links pointing to Shopify domains, likely for SEO poisoning or to appear more legitimate. The primary malicious IOC is the redirector URL.

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.cc/pify?keyword=selling+on+ebay+for+dummies+pdf
    • http://files.fullspectrumspeech.org/uploads/1/3/1/8/131857758/moxivevibutavemibe.pdf
    • http://files.touchingchi.com/uploads/1/3/1/8/131856105/sekemidafulawip.pdf
    • http://files.waubonsiestudent.org/uploads/1/3/0/7/130776416/woxuvegowosamugawon.pdf
    • https://cdn.shopify.com/s/files/1/0432/3724/5085/files/12283178244.pdf
    • https://cdn.shopify.com/s/files/1/0429/1664/2975/files/62136950499.pdf
    • https://cdn.shopify.com/s/files/1/0435/5407/8883/files/behavioral_finance_introduction.pdf
    • https://cdn.shopify.com/s/files/1/0434/6780/0736/files/a_b_z_dna.pdf
    • https://cdn.shopify.com/s/files/1/0431/1715/0357/files/37026133149.pdf
    • https://cdn.shopify.com/s/files/1/0430/3483/7149/files/introductory_chemistry_5th_edition_free.pdf
    • https://cdn.shopify.com/s/files/1/0439/4919/5419/files/fernando_pessoa_obra_potica.pdf
    • https://cdn.shopify.com/s/files/1/0437/4754/1146/files/9529168867.pdf
    • https://cdn.shopify.com/s/files/1/0430/7556/7770/files/muwixasulusarasiwabuviv.pdf
    • https://cdn.shopify.com/s/files/1/0433/4744/3865/files/kelinutodezu.pdf
    • https://cdn.shopify.com/s/files/1/0434/3057/6278/files/junazufora.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_off00007bb8.bin
73aa2c3588badbbe32ea1208ec6abf0492a28678546bd4aa139f86e0f8ac9346		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7BB8 5704 bytes
font_01_sfnt_off00008f16.bin
161f11908dac746154a00cf8392af79e358f70b2bada2cacfe9e17f55c91e58b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8F16 10396 bytes

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