Malicious PDF — malware analysis report

Static analysis result for SHA-256 537d4fb1160f42a5…

MALICIOUS

PDF

42.3 KB Created: 2020-08-17 07:29:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7c6aa9154c296da92292bcc5597eef22 SHA-1: 25ddd83aeacb3b125b8975bf10f14481195e2b22 SHA-256: 537d4fb1160f42a5aa59766c5af53fc1fe4e899777a9072f7432db198d146bb5
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to a redirector service. The primary malicious link, https://ttraff.cc/pify?keyword=food+web+diagram+template, is identified as a malicious redirector. The document body, though heavily obfuscated, contains this URL and other links to Shopify domains, suggesting a lure to a malicious site. No scripts were extracted, limiting the analysis of further payload delivery or persistence mechanisms.

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=food+web+diagram+template
    • http://files.easyfreightaustralia.com/uploads/1/3/1/4/131454102/vixipolek.pdf
    • http://vowadoji.krisjezakart.com/uploads/1/3/0/7/130739695/f20683.pdf
    • http://files.chukpet.com/uploads/1/3/1/4/131455158/e70dc1bc28.pdf
    • http://files.guesshowmuchiloveyoujewellery.com/uploads/1/3/1/4/131453062/3004337.pdf
    • http://womonez.glassjarsandbottles.com/uploads/1/3/1/4/131453028/zexazivogujomobap.pdf
    • https://cdn.shopify.com/s/files/1/0430/1612/6625/files/54475975720.pdf
    • https://cdn.shopify.com/s/files/1/0432/1368/4891/files/63916590426.pdf
    • https://cdn.shopify.com/s/files/1/0437/0235/4070/files/coleman_powermate_1850_manual.pdf
    • https://cdn.shopify.com/s/files/1/0438/6832/4005/files/lodevukesutefuj.pdf
    • https://cdn.shopify.com/s/files/1/0433/6982/4414/files/9535939463.pdf
    • https://cdn.shopify.com/s/files/1/0434/3103/5047/files/up_b._ed_entrance_exam_syllabus_2020.pdf
    • https://cdn.shopify.com/s/files/1/0427/7954/1671/files/38647057832.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_off00005c95.bin
317c307deef552df8796047f11412d049d7f153751b5014e96a9fc9b952f7a45		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5C95 4972 bytes
font_01_sfnt_off00006d8b.bin
278f9f75b776c4c0c78f65ae898e3cbf468d13189190414e65d9d0f02f5e8889		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D8B 9640 bytes
font_02_sfnt_off00008e97.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8E97 4324 bytes

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