Malicious PDF — malware analysis report

Static analysis result for SHA-256 c785d80d1c086716…

MALICIOUS

PDF

52.9 KB Created: 2020-08-21 07:02:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5de4b939b8bed89acf5d44c9676e6494 SHA-1: 67429007dfe0ca67d10c529b697919ab317df797 SHA-256: c785d80d1c08671694bfe2017cfd60b8b41fcc9b4857f1c25e908ad4d691b006
120 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with one identified as a malicious redirector. The primary heuristic indicates that the PDF links to known malicious redirector infrastructure. The document body contains garbled text but includes the same URL found in the heuristic, suggesting it's a deliberate lure. No scripts were extracted from this sample.

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.cc/pify?keyword=airman+certification+standards+private+pilot+airplane+answers
    • http://files.lvcchp.org/uploads/1/3/0/8/130813781/balawakiwozuxo.pdf
    • http://files.lknailsandbeauty.co.uk/uploads/1/3/2/6/132681938/wovaxale.pdf
    • https://cdn.shopify.com/s/files/1/0457/0490/4860/files/vande_mataram_abcd_2_song_songspk.pdf
    • https://cdn.shopify.com/s/files/1/0434/3624/5144/files/dovokelobunev.pdf
    • https://cdn.shopify.com/s/files/1/0431/9713/7056/files/55666130420.pdf
    • https://cdn.shopify.com/s/files/1/0449/4124/6619/files/ireland_eyewitness_travel_guides.pdf
    • https://cdn.shopify.com/s/files/1/0438/7173/1880/files/xafedofabojulusekozaba.pdf
    • https://cdn.shopify.com/s/files/1/0435/1302/0570/files/3742801302.pdf
    • https://cdn.shopify.com/s/files/1/0428/5313/8591/files/52817846007.pdf
    • https://cdn.shopify.com/s/files/1/0434/0475/5096/files/behringer_super_x_pro_cx2310_crossover.pdf
    • https://cdn.shopify.com/s/files/1/0429/4190/7110/files/65420755095.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_off00008396.bin
6c1a5d9f543c25c1dd2b494061cd252ec95e91145ffeb42ab56c7ccd5d0124b6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8396 5228 bytes
font_01_sfnt_off00009546.bin
317db745523b8d3e2b85abce3c03d2c5fe9090b7e45d886ff0d87fb86b437a34		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9546 10144 bytes
font_02_sfnt_off0000b800.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB800 4324 bytes

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