Malicious PDF — malware analysis report

Static analysis result for SHA-256 560e05340d2aac26…

MALICIOUS

PDF

49.6 KB Created: 2020-07-31 01:53:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 816ba63087d88e0896b419c7e045f6ca SHA-1: 9a63963740b5aa2e8716d63309076d64b4025d3c SHA-256: 560e05340d2aac26b9b5ad929bcd3da27c23bef100f63bbdca9c7b06d6358795
120 Risk Score

Malware Insights

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

The PDF file contains numerous links, a technique often used for SEO poisoning or to redirect users to malicious sites. One critical heuristic identified a link to a known malicious redirector, 'ttraff.ru', which is part of a campaign to lure users into downloading further malicious content. The document body, though heavily obfuscated, contains text related to downloading a dictionary, suggesting a social engineering pretext.

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=descargar+diccionario+de+americanismos+pdf
    • http://files.healthgeography.org/uploads/1/3/1/4/131453251/fisemosomuf.pdf
    • http://files.mayburydaycamp.com/uploads/1/3/1/3/131380045/bejus.pdf
    • http://files.promoteteaching.com/uploads/1/3/0/8/130814387/4619920.pdf
    • http://files.carlyzimmerman.com/uploads/1/3/1/6/131606335/ef2e07ec81c9c.pdf
    • http://files.carlyzimmerman.com/u
    • https://cdn.shopify.com/s/files/1/0434/1497/8718/files/tavizarapefefugiruwum.pdf
    • https://cdn.shopify.com/s/files/1/0429/8578/3447/files/kurimav.pdf
    • https://cdn.shopify.com/s/files/1/0434/0521/3852/files/raxoxunosexorepomakor.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/sakemiribukewud.pdf
    • https://cdn.shopify.com/s/files/1/0428/9173/9295/files/vipaxuzexuzufumopabovajes.pdf
    • https://cdn.shopify.com/s/files/1/0435/5548/7905/files/gitaka.pdf
    • https://cdn.shopify.com/s/files/1/0437/1464/2070/files/pefikadidokakigusogo.pdf
    • https://cdn.shopify.com/s/files/1/0429/2270/5055/files/48443746413.pdf
    • https://cdn.shopify.com/s/files/1/0430/9411/4465/files/57137687465.pdf
    • https://cdn.shopify.com/s/files/1/0430/6799/8359/files/79684635786.pdf
    • https://cdn.shopify.com/s/files/1/0428/2885/7503/files/laxonusewekidibiwez.pdf
    • https://cdn.shopify.com/s/files/1/0434/0816/2981/files/liwerapofonemovumetavir.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_off000081ab.bin
0aefc82ac015e13e8176a14039d2dbffdeadd8ee6ad67c86f2419ca78530e4ef		 pdf-font-stream PDF embedded font (sfnt) at offset 0x81AB 5152 bytes
font_01_sfnt_off0000930c.bin
5fda24a5491d4ab4176b79fb9afb7410c508e9025b1fca468279ca8d18f71215		 pdf-font-stream PDF embedded font (sfnt) at offset 0x930C 11136 bytes

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