Malicious PDF — malware analysis report

Static analysis result for SHA-256 df19f5380ae89f82…

MALICIOUS

PDF

50.1 KB Created: 2020-08-22 01:31:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 87424d4e811cf3e77adcb8bc42233b46 SHA-1: faf898e809a8bb20a9c61784c4780d5bf64f2c26 SHA-256: df19f5380ae89f820a60575bd314e4355552daa3e2d5ec94074b18802d7ff5ca
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector at 'ttraff.com'. This suggests a lure to a phishing site or a malware download. The document body, though heavily obfuscated, contains the malicious URL and other PDF links, indicating a deliberate attempt to direct the user to external content. No scripts were extracted, limiting the analysis of direct execution capabilities.

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=basic+instinct+2++in+isaimini
    • http://files.divreitorahofvien.com/uploads/1/3/1/3/131381612/vawofuxa.pdf
    • https://cdn.shopify.com/s/files/1/0433/7329/7814/files/jubepudirategew.pdf
    • https://cdn.shopify.com/s/files/1/0434/2713/5640/files/jezewi.pdf
    • https://cdn.shopify.com/s/files/1/0448/2033/2705/files/yerf_dog_parts.pdf
    • https://cdn.shopify.com/s/files/1/0437/2129/3974/files/cambridge_ielts_8_listening_test_3_answer_key.pdf
    • https://cdn.shopify.com/s/files/1/0430/5354/7677/files/selling_skills.pdf
    • https://cdn.shopify.com/s/files/1/0443/3153/2444/files/chrome_os_usb_bootable.pdf
    • https://cdn.shopify.com/s/files/1/0431/4680/5404/files/jorawupipa.pdf
    • https://cdn.shopify.com/s/files/1/0432/9691/5621/files/61729165776.pdf
    • https://cdn.shopify.com/s/files/1/0433/2473/5643/files/71144343059.pdf
    • https://cdn.shopify.com/s/files/1/0431/5247/4267/files/burukarizamebafizajuset.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
stream_004_off000075fa.bin
88e9b7591aebc25de24c280c31f757aa24ae8a52a7405d04db3bdfe15aabcd84		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x75FA 14208 bytes
font_00_sfnt_off00006517.bin
7ba3773b1c367191fad65b3fc68ba057744d5a593ced9664fd1f8b028b1819ff		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6517 4996 bytes
font_02_sfnt_off000097a0.bin
1c53f7f82ebd78a9dbdf587ca398d4a830364036d8f44eaba24d37fd119ba2ab		 pdf-font-stream PDF embedded font (sfnt) at offset 0x97A0 10536 bytes

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