Malicious PDF — malware analysis report

Static analysis result for SHA-256 7505a87a7020ef04…

MALICIOUS

PDF

54.6 KB Created: 2020-12-07 06:36:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 855afa6b419904d254fdad907ebd33a1 SHA-1: 3cdb38c076abef82a6b6ec4cfea428ba12ee8cbb SHA-256: 7505a87a7020ef04f11a99400f32e5dfe3f0b94811eba1b20a1cd307095a220d
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a phishing or trojan threat. It contains a mass of external links, with one prominent URL pointing to 'traffking.ru', suggesting a potential phishing lure or a distribution point for further malicious content. The PDF structure and embedded links are indicative of an attempt to disguise malicious activity within seemingly legitimate document references.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8041

Heuristics 4

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://traffking.ru/aws?utm_term=activity+indicator+android+xamarin
    • https://cdn-cms.f-static.net/uploads/4450160/normal_5fa158c359043.pdf
    • https://kipunazumalimak.weebly.com/uploads/1/3/4/7/134755782/6919896.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/9d1e2ebf-5ef8-476c-a021-b15c60b3a3f9/topics_in_algebra_herstein_book.pdf
    • https://static1.squarespace.com/static/5fc5b0fb8139af037665d853/t/5fc6d9361d106d256bb1326b/1606867255934/glitch_image_effect_generator_v2.pdf
    • https://uploads.strikinglycdn.com/files/32f52a3c-fe0f-492a-a7d0-932ea4c87fc2/pixel_hero_warfare_unblocked.pdf
    • https://s3.amazonaws.com/dazemi/xeropovupisezubozamo.pdf
    • https://s3.amazonaws.com/geradi/13285142462.pdf
    • https://uploads.strikinglycdn.com/files/5f0668cb-7601-4d31-a93e-270ace6b1d72/jujifilej.pdf
    • https://uploads.strikinglycdn.com/files/be633dba-8b05-456c-8554-3687eb2dbb26/60630621929.pdf
    • https://uploads.strikinglycdn.com/files/1b2ef70d-a61d-4d91-99b9-02a7b1ec3fe7/93988830966.pdf
    • http://scripts.sil.org/OFL

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c516.bin
d249251220043cd6eea3b7e345e899294173c0d022502e6e952f2f77582b86a4		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC516 4764 bytes

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