Malicious PDF — malware analysis report

Static analysis result for SHA-256 f1bca167f432fa4e…

MALICIOUS

PDF

40.8 KB Created: 2020-08-24 07:37:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5794a4a253a1a90f435cd72ef1b32e4b SHA-1: 8d38c94ce3ba6421e0108cc23d6b5b96fb1f26cb SHA-256: f1bca167f432fa4eb0374cd9f75eaffd5526307c7536ed6d2dc55561914e5270
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.com/pify?keyword=bootstrap+template+builder'. Additionally, it exhibits a PDF link farm behavior, embedding numerous external PDF links, many hosted on cdn.shopify.com. The document body, though heavily obfuscated, contains the malicious URL and several other PDF links, suggesting a lure to external content. The primary intent appears to be redirecting the user to malicious infrastructure.

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=bootstrap+template+builder
    • http://files.protectgladewatershed.com/uploads/1/3/1/4/131452733/611396.pdf
    • http://lipepawu.avsyum.com/uploads/1/3/1/4/131454106/xalisobeb-lafomito.pdf
    • https://cdn.shopify.com/s/files/1/0432/3662/2498/files/sunokar.pdf
    • https://cdn.shopify.com/s/files/1/0434/7595/9973/files/el_cine_antonin_artaud.pdf
    • https://cdn.shopify.com/s/files/1/0433/2286/7880/files/vomasapegaxawod.pdf
    • https://cdn.shopify.com/s/files/1/0448/2033/2705/files/bulave_tujhe_song.pdf
    • https://cdn.shopify.com/s/files/1/0448/1551/5805/files/radakofazanirorufevif.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/mafimovudowejiner.pdf
    • https://cdn.shopify.com/s/files/1/0430/9463/8749/files/dovisijesowikarew.pdf
    • https://cdn.shopify.com/s/files/1/0440/5932/8662/files/92334284347.pdf
    • https://cdn.shopify.com/s/files/1/0429/9826/8065/files/how_to_hack_snake.pdf
    • https://cdn.shopify.com/s/files/1/0429/2440/8988/files/12500478962.pdf
    • https://cdn.shopify.com/s/files/1/0432/5857/7046/files/5693399790.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_off00006092.bin
45bf3289cccab4cd3efb7f7d683354a8400ec62c1f3a566544063f77bd16c025		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6092 5296 bytes
font_01_sfnt_off00007270.bin
4b50b88d5c6b8a303239424e26eca5aa10966b87f06deed1ef9b15a1bb5675e6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7270 10580 bytes

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