Malicious PDF — malware analysis report

Static analysis result for SHA-256 3b6f2b62b15a37f5…

MALICIOUS

PDF

99.2 KB Created: 2020-08-14 20:58:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2994cd0aff9e633947e358f187bc699d SHA-1: 15f87685dcf9658855ab1f80ee9591ec80ee3a6d SHA-256: 3b6f2b62b15a37f570cabaa2f1c005ee7fcb80835a2859280a50e4325ca13a63
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 Malicious Link T1059.001 PowerShell

The PDF file contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.com/pify?keyword=viva+video+stream+tv+online+apk'. Additionally, it exhibits characteristics of a link farm, with numerous external PDF links. The document body, though heavily obfuscated, contains a reference to this malicious URL, suggesting a lure to download or access content via this redirector. The presence of a 'download button' heuristic further supports the attack pattern of tricking users into clicking malicious links.

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=viva+video+stream+tv+online+apk
    • http://files.oldfallingsurc.org/uploads/1/3/0/8/130873807/dexutoriw-gedetowoweru-xunabojuxi.pdf
    • http://files.riverbendins.com/uploads/1/3/0/7/130775892/ruvoxinip.pdf
    • http://riwonoxeb.reainfocus.com/uploads/1/3/0/8/130814328/sugevavezotel-pafoba-remiv.pdf
    • https://cdn.shopify.com/s/files/1/0447/9077/5965/files/asignatura_estatal_historia_de_tlaxcala.pdf
    • https://cdn.shopify.com/s/files/1/0436/2859/3315/files/sasowozobof.pdf
    • https://cdn.shopify.com/s/files/1/0434/6213/1869/files/gaxakodulawekalelinoj.pdf
    • https://cdn.shopify.com/s/files/1/0437/8587/9704/files/40944294356.pdf
    • https://cdn.shopify.com/s/files/1/0428/3406/7615/files/kixutaxibarogunapuluvoni.pdf
    • https://cdn.shopify.com/s/files/1/0432/2381/0203/files/dopaxi.pdf
    • https://cdn.shopify.com/s/files/1/0432/2181/1364/files/turalijovipopobe.pdf
    • https://cdn.shopify.com/s/files/1/0434/4132/4184/files/51406365655.pdf
    • https://cdn.shopify.com/s/files/1/0428/6126/5062/files/vorenenidigifoloton.pdf
    • https://cdn.shopify.com/s/files/1/0430/9660/4825/files/ruwonulumefapazakuse.pdf
    • https://cdn.shopify.com/s/files/1/0436/5670/8254/files/63201008771.pdf
    • https://cdn.shopify.com/s/files/1/0431/4447/8874/files/financial_accounting_ifrs_solutions_manual.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 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001022d.bin
2ce5a7286efefc5aae27ce1c31b3347e159d00bd30cf97f509a0b7f7d49caffb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1022D 6440 bytes
font_01_sfnt_off000111f1.bin
5b427567d27c3b3fb439fc0e870ffd7ac7f7a7c52fad170423b3c000c04fb2d0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x111F1 4536 bytes
font_02_sfnt_off000121a7.bin
b441d54ca45ab9b2f4fe5f2ed8f90ccebc6e3e73781c1e499705edc113b8cf12		 pdf-font-stream PDF embedded font (sfnt) at offset 0x121A7 5192 bytes
font_03_sfnt_off0001333b.bin
b0d22f94e56ca0194f2a8d8192316e693423c3aaf0a15406f82936d2d1022d43		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1333B 2448 bytes
font_04_sfnt_off00013ced.bin
9b48ac19628063973c103f50a0d5230ddb5b43dbd30915f2ef654bd3e6a11057		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13CED 13972 bytes
font_05_sfnt_off00016940.bin
dc816314711be61569c8107f4c87eba91ac078073196aec9f1c26591469039da		 pdf-font-stream PDF embedded font (sfnt) at offset 0x16940 16088 bytes

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