Malicious PDF — malware analysis report

Static analysis result for SHA-256 3a3ac4ac4b83ee29…

MALICIOUS

PDF

56.7 KB Created: 2020-08-03 18:47:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 52e52df476cd0ee82a658ec70ae88e23 SHA-1: d738b0902d811f0466b4157be27ec43102fcdbda SHA-256: 3a3ac4ac4b83ee299e5670483ad43cdf1fc8f4b382a78d13696dabdd97b7dd6d
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, a technique often used for SEO farms to generate traffic. One prominent link, 'https://ttraff.cc/wb?keyword=2006%20chrysler%20sebring%20sedan%20owners%20manual', points to a known malicious redirector. The document body, though heavily obfuscated, contains text related to a car manual, suggesting a 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/wb?keyword=2006%20chrysler%20sebring%20sedan%20owners%20manual
    • http://files.chemisme.com/uploads/1/3/0/8/130874143/c15ac6b6710.pdf
    • http://mizirib.grinnellcecbucketcourses.org/uploads/1/3/1/1/131163590/1500684.pdf
    • http://files.nauiv.org/uploads/1/3/0/8/130814124/69462e35ac45e.pdf
    • https://cdn.shopify.com/s/files/1/0430/3070/8385/files/juzavusurefotefu.pdf
    • https://cdn.shopify.com/s/files/1/0440/6339/1894/files/bms_season_1_episode_1.pdf
    • https://cdn.shopify.com/s/files/1/0440/7656/4630/files/5434581183.pdf
    • https://cdn.shopify.com/s/files/1/0434/0727/8238/files/87487349402.pdf
    • https://cdn.shopify.com/s/files/1/0431/0925/3286/files/pawewatof.pdf
    • https://cdn.shopify.com/s/files/1/0431/1865/7703/files/kixabaroxiw.pdf
    • https://cdn.shopify.com/s/files/1/0433/4940/9960/files/bartleby_the_scrivener_free.pdf
    • https://cdn.shopify.com/s/files/1/0433/5930/5877/files/zanosapopepifat.pdf
    • https://cdn.shopify.com/s/files/1/0433/9472/8103/files/vugajudelovokoluviva.pdf
    • https://cdn.shopify.com/s/files/1/0430/2353/2195/files/ffxiv_hunt_locations.pdf
    • https://cdn.shopify.com/s/files/1/0435/1305/3338/files/41175077113.pdf
    • https://cdn.shopify.com/s/files/1/0432/2341/6995/files/98311992033.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_off0000942a.bin
f0192bb63d7d92923225aef77225565f1684f651b51ccebd3d278ef054e576a8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x942A 6020 bytes
font_01_sfnt_off0000a88d.bin
25a73acf286f2f8153eca5c73ec55a0fd5346b7c5ff8f834b1d9df428d4130a1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA88D 14508 bytes

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