Malicious PDF — malware analysis report

Static analysis result for SHA-256 e7243af20bf8971d…

MALICIOUS

PDF

45.8 KB Created: 2020-08-17 11:24:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4be1dba544b6f5bfdb5dc3ff11d02ecb SHA-1: 5cc71aa3aadd0ace6560b82d73fd17fd1ecbd0ac SHA-256: e7243af20bf8971d06064fa3a63820365a5a3aa920dc38d390e94a48e55e1b64
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, many of which point to a redirector service. The primary malicious link identified is https://ttraff.ru/pify?keyword=chalana+piparwa+ke+tarawa+video+song, which is flagged as malicious. The document body, though heavily obfuscated, also contains this URL, suggesting it's the intended lure. The presence of a large number of SEO-optimized PDF links indicates a link farm strategy to distribute malicious content.

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.ru/pify?keyword=chalana+piparwa+ke+tarawa+video+song
    • http://fazawi.esse-essentialoilskincare.com/uploads/1/3/1/3/131398404/4698327.pdf
    • http://lukire.livinginnobility.com/uploads/1/3/2/8/132814930/2776904.pdf
    • https://cdn.shopify.com/s/files/1/0437/8096/4510/files/srimad_bhagavatam_book_in_english.pdf
    • https://cdn.shopify.com/s/files/1/0434/5289/1297/files/83935995399.pdf
    • https://cdn.shopify.com/s/files/1/0430/0311/7721/files/sotajabu.pdf
    • https://cdn.shopify.com/s/files/1/0437/9272/8226/files/communication_and_collaboration_skills.pdf
    • https://cdn.shopify.com/s/files/1/0433/6638/3768/files/71952925029.pdf
    • https://cdn.shopify.com/s/files/1/0436/3298/4222/files/sewokejevorigagodej.pdf
    • https://cdn.shopify.com/s/files/1/0432/6581/8789/files/48427569900.pdf
    • https://cdn.shopify.com/s/files/1/0432/0899/9074/files/vetiligazaxivikoduz.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/22893269325.pdf
    • https://cdn.shopify.com/s/files/1/0430/3300/2145/files/32505767549.pdf
    • https://cdn.shopify.com/s/files/1/0429/1097/4108/files/58086682415.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_off000063d0.bin
3168deb3975e6b2c996e66f246e1f82e852055f1c306d33cbcc4cb2f0b1d413d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x63D0 5344 bytes
font_01_sfnt_off00007604.bin
e00a4ecbe67eec1116df613388ee0f440e63de560ed8ac34070f2de504c71e8a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7604 13196 bytes
font_02_sfnt_off00009f39.bin
845bd6f292c79c68b4d9b61736b41c773e74db6428c9fb77c70aa85a19bb7fb3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9F39 2544 bytes

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