Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e5f8baee52a562d…

MALICIOUS

PDF

39.8 KB Created: 2020-08-08 09:11:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6c0c623264a16b68263b635f447176cc SHA-1: d47138ea39ed304bfe51c7223d5792489869221d SHA-256: 7e5f8baee52a562da70754b2f2c03884fc6e93056c350c8def6ae016779d1d6a
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, a technique often used to create link farms for SEO manipulation or to distribute malicious content. One of the primary links directs to a known malicious redirector, ttraff.ru, disguised as a free book download. This suggests the document's purpose is to redirect users to potentially harmful sites. No scripts were extracted, and the document body is heavily obfuscated, making it difficult to determine further payload delivery mechanisms.

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=physiology+practical+book+ak+jain+pdf
    • http://files.narokgames.com/uploads/1/3/1/3/131380469/9d868a.pdf
    • http://files.womenartistsreaction.com/uploads/1/3/2/3/132302863/8d22be5d98d153.pdf
    • http://files.hopeshouseworks.ca/uploads/1/3/0/7/130776486/julel_gigabotelebux_defaturuwipar_dudinazufe.pdf
    • https://cdn.shopify.com/s/files/1/0435/9569/4239/files/23664298080.pdf
    • https://cdn.shopify.com/s/files/1/0433/4606/7605/files/77612852695.pdf
    • https://cdn.shopify.com/s/files/1/0438/3876/7264/files/moboteri.pdf
    • https://cdn.shopify.com/s/files/1/0446/9896/0026/files/3208_cat_engine_parts_diagram.pdf
    • https://cdn.shopify.com/s/files/1/0432/8043/3302/files/72017369294.pdf
    • https://cdn.shopify.com/s/files/1/0431/2439/2087/files/gta_3_cheats_pc.pdf
    • https://cdn.shopify.com/s/files/1/0431/0709/0581/files/5965419566.pdf
    • https://cdn.shopify.com/s/files/1/0434/0118/3397/files/32792980908.pdf
    • https://cdn.shopify.com/s/files/1/0428/5654/6467/files/sonofebideridupikike.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_off000045df.bin
7980ee17727ae54796f11b873ac1d3ad58dcac5bd6343f3bcc9d4d6298bb3801		 pdf-font-stream PDF embedded font (sfnt) at offset 0x45DF 5800 bytes
font_01_sfnt_off000059a6.bin
6891ccece1e1cf8e356e86a8a79cf5d269a518eaac6a358ae7d4595f3ceca413		 pdf-font-stream PDF embedded font (sfnt) at offset 0x59A6 9872 bytes
font_02_sfnt_off00007b9c.bin
c41fc46809d2260d2d1a821cef6bb00dae560fdbad380da94a93f29d012df54e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7B9C 16164 bytes

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