Malicious PDF — malware analysis report

Static analysis result for SHA-256 2a718f9e0483f750…

MALICIOUS

PDF

42.6 KB Created: 2020-08-12 11:15:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6c8ae96bc5e80d2de2707eba683a07c2 SHA-1: 3d9b3dc768325e742b4bc955b8290f061c21969c SHA-256: 2a718f9e0483f75028a502c911030df70ea79c166bf6eecdf913bbd676f1f585
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains numerous embedded links, with a critical heuristic identifying a malicious redirector at 'https://ttraff.com/pify?keyword=circle+of+fifths+guitar+explained+pdf'. This suggests the document's primary purpose is to redirect the user to a malicious site, likely for phishing or to download further malware. The document body, though heavily obfuscated, contains the same lure text and URLs found in the heuristics, reinforcing the malicious intent.

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.com/pify?keyword=circle+of+fifths+guitar+explained+pdf
    • http://files.northendenfitness.com/uploads/1/3/1/3/131380845/pafotuwip-vowomubulilot-fidazakavepar.pdf
    • http://files.crc-cc.com/uploads/1/3/0/8/130813111/luragesifubel-zasujo-pejopiti.pdf
    • http://wusumom.huellasdepaz.org/uploads/1/3/1/8/131872225/c50965f6.pdf
    • http://fivef.marileenielsen.com/uploads/1/3/2/8/132816066/2071643.pdf
    • http://puxoxozuk.kimberlylau.com/uploads/1/3/0/9/130968973/wifuxulewex.pdf
    • https://cdn.shopify.com/s/files/1/0431/7495/3124/files/osrs_black_demon_safe_spot.pdf
    • https://cdn.shopify.com/s/files/1/0436/7086/4025/files/90091517710.pdf
    • https://cdn.shopify.com/s/files/1/0430/7537/1159/files/wuminafonija.pdf
    • https://cdn.shopify.com/s/files/1/0429/5353/9747/files/50910172147.pdf
    • https://cdn.shopify.com/s/files/1/0454/0645/3928/files/causal_inference_in_statistics_a_primer_download.pdf
    • https://cdn.shopify.com/s/files/1/0432/1751/8751/files/sumifivugipediri.pdf
    • https://cdn.shopify.com/s/files/1/0430/9942/2881/files/lubodiwukutulidupuzilim.pdf
    • https://cdn.shopify.com/s/files/1/0435/1698/5508/files/tuzan.pdf
    • https://cdn.shopify.com/s/files/1/0431/8029/4298/files/bridges_math_grade_3.pdf
    • https://cdn.shopify.com/s/files/1/0436/0860/4829/files/24639569685.pdf
    • https://cdn.shopify.com/s/files/1/0428/4802/6780/files/gadusilezirer.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/88490435411.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_off000068a8.bin
d181751d5065a31e5689074e81330f0021712eea02bb8010fa1798506848fb0f
pdf-font-stream PDF embedded font (sfnt) at offset 0x68A8 5392 bytes
font_01_sfnt_off00007af2.bin
f3f80abd55df8520f4ee3d013957f00f669f423255c9015eabb3a22a19937b8c
pdf-font-stream PDF embedded font (sfnt) at offset 0x7AF2 9976 bytes