Malicious PDF — malware analysis report

Static analysis result for SHA-256 9b02874db20e2d13…

MALICIOUS

PDF

44.3 KB Created: 2020-08-16 00:55:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 545d5d91f41812dcb67c709372c28204 SHA-1: 143427e6d8e541e2bd12bad565fb1a624d75b305 SHA-256: 9b02874db20e2d133153861a2ce05cfb550486a4596698a447ef36ca492ef142
120 Risk Score

Malware Insights

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

The PDF file contains multiple embedded URLs, with a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. The document body, though heavily obfuscated, contains the same URL, suggesting an attempt to lure the user to malicious infrastructure. The presence of a large number of external PDF links, many hosted on Shopify, indicates a link farm strategy, likely to improve SEO for malicious content or to obscure the true destination.

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=award+ceremony+background+music
    • http://files.roxierosekids.com/uploads/1/3/1/0/131070483/fovegareg.pdf
    • https://cdn.shopify.com/s/files/1/0427/4972/2790/files/95230701753.pdf
    • https://cdn.shopify.com/s/files/1/0430/7428/9813/files/famokelatupafola.pdf
    • https://cdn.shopify.com/s/files/1/0434/8359/4917/files/cdac_entrance_exam_syllabus_for_cse.pdf
    • https://cdn.shopify.com/s/files/1/0430/4830/4797/files/giwalitibuzozin.pdf
    • https://cdn.shopify.com/s/files/1/0432/3796/5979/files/29286829679.pdf
    • https://cdn.shopify.com/s/files/1/0434/6780/0736/files/atharva_veda_malayalam.pdf
    • https://cdn.shopify.com/s/files/1/0448/4294/2624/files/csf_full_form_in_computer.pdf
    • https://cdn.shopify.com/s/files/1/0431/4942/6839/files/40827074350.pdf
    • https://cdn.shopify.com/s/files/1/0434/9827/4978/files/65401552955.pdf
    • https://cdn.shopify.com/s/files/1/0428/2348/3548/files/98379687692.pdf
    • https://cdn.shopify.com/s/files/1/0431/1983/7346/files/95360948941.pdf
    • https://cdn.shopify.com/s/files/1/0433/6871/0294/files/waltz_of_the_flowers_piano.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000624a.bin
8b163a7a98b6cdc1fab4800432d74b5b56839a55bee65f6486b4905604b29031		 pdf-font-stream PDF embedded font (sfnt) at offset 0x624A 5416 bytes
font_01_sfnt_off0000749e.bin
d15ad415731a3ce02b15dd5d08dd4c174d02cf84817d9a2ad547de678010ad28		 pdf-font-stream PDF embedded font (sfnt) at offset 0x749E 9864 bytes
font_02_sfnt_off0000967c.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x967C 4324 bytes

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