Malicious PDF — malware analysis report

Static analysis result for SHA-256 3fe0c75f49e2e750…

MALICIOUS

PDF

81.8 KB Created: 2020-08-18 13:26:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7d5041f97daa71c676b0d67cd9567dc5 SHA-1: e51bf0bffc364d29246d103a3d5325d69720034d SHA-256: 3fe0c75f49e2e75069754f14f2e0b9c9d74a8b0e4a5246ee37c973318a036bfd
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'ttraff.ru'. The document body, though heavily obfuscated, contains the same URL. The file also exhibits characteristics of a link farm, with numerous external PDF links, many hosted on Shopify. The primary attack vector appears to be social engineering, using a plausible-sounding lure to direct users to malicious infrastructure.

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=chennai+central+video+platform
    • http://files.somax-consulting.com/uploads/1/3/1/4/131453405/pavekenamuwu.pdf
    • http://sosefudex.cicadabridal.com/uploads/1/3/0/7/130776791/gubamajuvu.pdf
    • http://pefexetib.fanali.org/uploads/1/3/0/9/130969699/basojijuxawufuwawope.pdf
    • http://renabur.spiethandsatow.com/uploads/1/3/1/6/131636951/dc000d85a7.pdf
    • http://nipawevo.seislagos.org/uploads/1/3/0/7/130775934/salirivuti-gedeka-riwebafolotopis-sezagob.pdf
    • https://cdn.shopify.com/s/files/1/0429/5829/1093/files/mesiwovikufewadagis.pdf
    • https://cdn.shopify.com/s/files/1/0452/7711/8625/files/defujimipapix.pdf
    • https://cdn.shopify.com/s/files/1/0430/9109/9805/files/waderebogolusepupituze.pdf
    • https://cdn.shopify.com/s/files/1/0427/7154/6279/files/redorasate.pdf
    • https://cdn.shopify.com/s/files/1/0435/3317/2885/files/netgear_r7000_ddwrt.pdf
    • https://cdn.shopify.com/s/files/1/0434/5757/7122/files/payment_system_act_2020.pdf
    • https://cdn.shopify.com/s/files/1/0433/9197/5580/files/bekabubugosutawerigibepad.pdf
    • https://cdn.shopify.com/s/files/1/0431/4651/0504/files/69041287065.pdf
    • https://cdn.shopify.com/s/files/1/0451/3605/2389/files/present_continuous_yes_no_questions_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0434/0786/8060/files/27640284724.pdf
    • https://cdn.shopify.com/s/files/1/0434/7111/0308/files/limipofuga.pdf
    • https://cdn.shopify.com/s/files/1/0448/2344/5666/files/channel_7_weather_report_video.pdf
    • https://cdn.shopify.com/s/files/1/0429/3728/6812/files/wow_thousand_needles.pdf
    • https://cdn.shopify.com/s/files/1/0436/9488/2984/files/73805849498.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_off0000eade.bin
1b9de5c2ec9ea9b24f4ca9643fccb3ca1aec00343c92ee73a8233b5b43e57add
pdf-font-stream PDF embedded font (sfnt) at offset 0xEADE 5180 bytes
font_01_sfnt_off0000fc54.bin
55f47a811f420b852f72c7e6ce972431242202a2195dba8d4153696cb497a4d9
pdf-font-stream PDF embedded font (sfnt) at offset 0xFC54 12352 bytes
font_02_sfnt_off00012449.bin
6e3fbd491d8b71441998836ddca0d0c102716a221ea14f8143929167ad9a79b3
pdf-font-stream PDF embedded font (sfnt) at offset 0x12449 16164 bytes