Malicious PDF — malware analysis report

Static analysis result for SHA-256 83223c49012f9912…

MALICIOUS

PDF

42.7 KB Created: 2020-08-20 11:56:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 035ed93986f680979929cd908efcc6eb SHA-1: f0cb9422c38d942be3de08170d8620384174e7c2 SHA-256: 83223c49012f99124a043cdced2d1658e8bbbf8efe68081225aaf81fb2b3a6b5
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded links, many of which point to external sites, including a known malicious redirector. The document body, though partially corrupted, contains text related to 'Rockstar games list for pc free', suggesting a lure to entice users to click on the malicious links. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=rockstar+games+list+for+pc+free
    • http://birevosib.traumayellow.com/uploads/1/3/1/4/131408100/bbdb21ea552e24.pdf
    • http://degakuz.projectgust.org/uploads/1/3/0/8/130874575/f202c.pdf
    • http://files.lotusliondesign.com/uploads/1/3/1/4/131407530/6797100.pdf
    • http://files.chesterfieldelementarypta.com/uploads/1/3/1/3/131379540/likoforevit.pdf
    • http://files.morrowtimes.com/uploads/1/3/1/8/131872198/691ab46971.pdf
    • https://cdn.shopify.com/s/files/1/0434/6901/3158/files/blood_strike_free.pdf
    • https://cdn.shopify.com/s/files/1/0430/9309/8660/files/bazeniwalege.pdf
    • https://cdn.shopify.com/s/files/1/0428/5346/6271/files/talikog.pdf
    • https://cdn.shopify.com/s/files/1/0438/8945/9368/files/61862894598.pdf
    • https://cdn.shopify.com/s/files/1/0440/8125/0469/files/ben_10_reboot_game_apk.pdf
    • https://cdn.shopify.com/s/files/1/0431/0768/0405/files/vozosekakusegimup.pdf
    • https://cdn.shopify.com/s/files/1/0431/5319/5165/files/hex_code_for_white.pdf
    • https://cdn.shopify.com/s/files/1/0433/5150/7112/files/6329254794.pdf
    • https://cdn.shopify.com/s/files/1/0430/4211/1650/files/arabic_personal_pronouns.pdf
    • https://cdn.shopify.com/s/files/1/0451/4159/0170/files/cambridge_primary_english_learner_s_book.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_off0000674d.bin
41f3f7d2ef1ae0a2ed27e4a8ae3dc90e945773b8c651ff3d56a3e2adce8c188a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x674D 5408 bytes
font_01_sfnt_off000079a1.bin
0bc8456562587956dc5919b551320cb91ad44c136e8a7a58b6c661f3161845d8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x79A1 10680 bytes

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