Malicious PDF — malware analysis report

Static analysis result for SHA-256 8ec8b76fb41a3df0…

MALICIOUS

PDF

46.3 KB Created: 2020-08-23 19:31:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4d3ad396d769a15f0b623c31004d6f8f SHA-1: 7811bd51458e206114341ae494ccc1590285efdf SHA-256: 8ec8b76fb41a3df00b6a821344b54eb56478e20a63cd43c28080f2a70d687e3a
120 Risk Score

Malware Insights

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

The PDF file contains a link that redirects to a known malicious URL, identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though heavily obfuscated, contains text suggesting a lure related to 'funny whatsapp status video' and includes the malicious URL. The PDF_SEO_LINK_FARM heuristic indicates the presence of numerous external links, further supporting a malicious intent to redirect users. The primary attack vector appears to be social engineering through a deceptive 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=funny+whatsapp+status+video
    • http://tubaramat.notabenetucson.com/uploads/1/3/2/8/132814930/4320682.pdf
    • http://files.jeremymahood.com/uploads/1/3/1/8/131871658/9383569.pdf
    • https://cdn.shopify.com/s/files/1/0434/2395/7144/files/tosunexexu.pdf
    • https://cdn.shopify.com/s/files/1/0428/5349/9046/files/zokevixuvi.pdf
    • https://cdn.shopify.com/s/files/1/0431/3474/6790/files/81499842071.pdf
    • https://cdn.shopify.com/s/files/1/0438/1625/5645/files/ulcerative_colitis_diet.pdf
    • https://cdn.shopify.com/s/files/1/0434/6196/8025/files/9755106174.pdf
    • https://cdn.shopify.com/s/files/1/0432/6031/3768/files/30987782368.pdf
    • https://cdn.shopify.com/s/files/1/0448/3599/5808/files/ios_simulator_in_xcode_download.pdf
    • https://cdn.shopify.com/s/files/1/0434/0734/3772/files/renesas_electronics_usb_3_host_controller.pdf
    • https://cdn.shopify.com/s/files/1/0429/8457/1031/files/39161670711.pdf
    • https://cdn.shopify.com/s/files/1/0461/6912/9123/files/convert_base64_to_angularjs.pdf
    • https://cdn.shopify.com/s/files/1/0437/3427/0117/files/balistica_forense_jose_jimenez_ortiz.pdf
    • https://cdn.shopify.com/s/files/1/0430/8090/8954/files/51756239758.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006ad7.bin
c7678abcc2467f76ece563d948fbd2cdb1bd39ae53b1b7f432051a8ff84b7b2d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6AD7 5008 bytes
font_01_sfnt_off00007bf4.bin
aa6d93751f74ad069c48bf8c1832f6c7786f605801b83baf907c1dfc4facdd7a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7BF4 9912 bytes
font_02_sfnt_off00009dd4.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9DD4 4324 bytes

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