Malicious PDF — malware analysis report

Static analysis result for SHA-256 e1f65a93979f4a68…

MALICIOUS

PDF

43.5 KB Created: 2020-08-20 19:40:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5aee0bf13c89273b65562c2458c68974 SHA-1: aec6ff96f34b008399b78211d7609467d85650e1 SHA-256: e1f65a93979f4a68dd4ef1cfc2fefae87d44eb45c621c32f5d5e4ebb0b543a7a
120 Risk Score

Malware Insights

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

The PDF document contains a mass of external links, with one prominent link pointing to a known malicious redirector. The document body, though heavily obfuscated, contains text related to a 'Vw golf mk1 parts manual' and includes the malicious URL, suggesting a lure to a phishing or malware distribution site. The heuristic firings confirm the presence of malicious redirector links and a link farm within the PDF.

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=vw+golf+mk1+parts+manual
    • http://files.tracysboats.com/uploads/1/3/2/8/132815175/segevusesot_dojotiwakakasun_tonajudalimopum_mevep.pdf
    • http://files.mammothnest.com/uploads/1/3/1/4/131483662/7997212.pdf
    • http://files.theshamandoctor.com/uploads/1/3/1/3/131384289/10a6375.pdf
    • http://files.dhammagalleria.com/uploads/1/3/2/7/132740417/7132813.pdf
    • http://wugaj.mikesconstruction.com/uploads/1/3/1/1/131164250/998633ddbaac79d.pdf
    • https://cdn.shopify.com/s/files/1/0427/9736/7452/files/sixujuwowumisoruxufezut.pdf
    • https://cdn.shopify.com/s/files/1/0431/6450/0122/files/kepogexif.pdf
    • https://cdn.shopify.com/s/files/1/0435/8501/1871/files/zoveteromijipefibog.pdf
    • https://cdn.shopify.com/s/files/1/0431/1754/3588/files/sapifafakotajobam.pdf
    • https://cdn.shopify.com/s/files/1/0430/9437/6605/files/99890939051.pdf
    • https://cdn.shopify.com/s/files/1/0437/9102/4277/files/nibutagevukewavujo.pdf
    • https://cdn.shopify.com/s/files/1/0436/4835/2406/files/formule_pour_calculer_l_age_en_excel.pdf
    • https://cdn.shopify.com/s/files/1/0439/2163/7544/files/17267234954.pdf
    • https://cdn.shopify.com/s/files/1/0428/9282/0647/files/eva_foam_sheet_white.pdf
    • https://cdn.shopify.com/s/files/1/0430/3123/2674/files/zamisimaruvifom.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_off00006325.bin
005396cc0c9b6d7c5b3455351adcd68ef8bd4c6256da329c62704a7590de1ecf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6325 5392 bytes
font_01_sfnt_off00007589.bin
682e15d5a3085d32d7aed3ac32a235b7ed19b2c885e03da01e755e1854939337		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7589 13436 bytes

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