Malicious PDF — malware analysis report

Static analysis result for SHA-256 f8544021bcfe6704…

MALICIOUS

PDF

41.2 KB Created: 2020-08-02 08:58:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6742ae6e170d5a64009d6b54eb429891 SHA-1: 747b2f52611bd2c5f0e06874b9b793c0fa95ea4b SHA-256: f8544021bcfe6704fd91ea4fedbb25186f99c515ec57a6a6ce31ecbe31562696
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, pointing to 'https://ttraff.com/pify?keyword=deezloader+remix+4.+3.+0+gratis'. This URL is presented within the document body, disguised as a download for 'Deezloader remix 4. 3. 0 gratis'. The file also exhibits characteristics of a link farm, with numerous embedded URLs, including one to 'cdn.shopify.com'. The primary attack vector appears to be social engineering, tricking the user into clicking the malicious link.

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.com/pify?keyword=deezloader+remix+4.+3.+0+gratis
    • http://files.parentsforsocialjustice.org/uploads/1/3/1/4/131452878/bedop_bekodezakifabiw_buzuwudepod_kaxutaruzokolix.pdf
    • http://files.taso-ssa.com/uploads/1/3/1/4/131453984/xiruzukeva.pdf
    • http://files.saintshaven.org/uploads/1/3/1/4/131438260/bawemevisakukeretig.pdf
    • https://cdn.shopify.com/s/files/1/0427/4146/5244/files/gewifapatapuwawubilebit.pdf
    • https://cdn.shopify.com/s/files/1/0431/8032/7076/files/don_t_whack_your_boss_with_superpowers.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/vidabuvuwegorowomilamum.pdf
    • https://cdn.shopify.com/s/files/1/0428/7604/3423/files/43846150610.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/54748680829.pdf
    • https://cdn.shopify.com/s/files/1/0428/1355/4855/files/78689858970.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/velokiw.pdf
    • https://cdn.shopify.com/s/files/1/0431/4228/3432/files/3167753657.pdf
    • https://cdn.shopify.com/s/files/1/0437/4216/7194/files/rgb_led_arduino.pdf
    • https://cdn.shopify.com/s/files/1/0430/1458/6521/files/68539324644.pdf
    • https://cdn.shopify.com/s/files/1/0436/9098/3574/files/45557443081.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_off00006163.bin
98e6e95564c922301f552ef6e59542750230f492df5ec443a24b6fde7407308e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6163 5688 bytes
font_01_sfnt_off000074c4.bin
316972263fd86ac2c839a928f785734057b7bb3b589718542143449b02527ec6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x74C4 10360 bytes

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