Malicious PDF — malware analysis report

Static analysis result for SHA-256 ce47d7643dad02b1…

MALICIOUS

PDF

38.5 KB Created: 2020-08-25 11:49:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 90a27e1e0c8adfe690ea0504ba094dfc SHA-1: b9fb2854c893672ee245ad389f91e37f9644fdcf SHA-256: ce47d7643dad02b17eb89462816767a160869f8505b03e976a2b4df745dd9440
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1200 Hardware Addressed T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.ru'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded URLs, many hosted on Shopify. The document body, though heavily obfuscated, contains the same redirector URL and a reference to 'feasibility report of smeda', suggesting a lure. The primary attack vector appears to be social engineering via a deceptive link 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=feasibility+report+of+smeda
    • http://files.brecksvillecogop.org/uploads/1/3/0/9/130969012/2955401.pdf
    • http://files.hither.com.au/uploads/1/3/1/3/131381607/6946379.pdf
    • http://kufexe.sweetrollercoaster.com/uploads/1/3/0/8/130874240/9871844.pdf
    • https://cdn.shopify.com/s/files/1/0432/8184/2341/files/73404386489.pdf
    • https://cdn.shopify.com/s/files/1/0435/4444/5079/files/tometorew.pdf
    • https://cdn.shopify.com/s/files/1/0427/5834/0774/files/vekapevedeluxi.pdf
    • https://cdn.shopify.com/s/files/1/0439/0957/8904/files/67555884846.pdf
    • https://cdn.shopify.com/s/files/1/0430/6881/7562/files/jafusofoxuxeralal.pdf
    • https://cdn.shopify.com/s/files/1/0431/2255/7082/files/tifepox.pdf
    • https://cdn.shopify.com/s/files/1/0438/2969/0528/files/89627172368.pdf
    • https://cdn.shopify.com/s/files/1/0434/0423/0805/files/naruto_blue_bird.pdf
    • https://cdn.shopify.com/s/files/1/0435/2894/5819/files/lafilodipifabimeg.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/67142307476.pdf
    • https://cdn.shopify.com/s/files/1/0427/5752/1574/files/lutobamibe.pdf
    • https://cdn.shopify.com/s/files/1/0437/4655/8106/files/last_day_on_earth_survival_guide.pdf
    • https://cdn.shopify.com/s/files/1/0438/3758/7606/files/kixumitizedenupadasur.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_off00005a29.bin
f9106278b462e70adab60fbe1387030a8ce2d61071446be0945dca4c2a3c3d0b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5A29 5384 bytes
font_01_sfnt_off00006c5a.bin
5eb496f219b5badd18da9fe7daf09d014ca3c236cf5c49edd87593df7a69e93a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C5A 9688 bytes

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