Malicious PDF — malware analysis report

Static analysis result for SHA-256 ffd2890b4279bc37…

MALICIOUS

PDF

43.2 KB Created: 2020-08-31 11:22:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a99b3f5c1917d347fcf151572fa167d0 SHA-1: 9bdaceb029abd4f45bcd3ac81e493d3e864ae3c7 SHA-256: ffd2890b4279bc37fa88d7be226d0e9c72fad078c1b90b8bf5936fd35faaf06c
128 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious Link

This PDF file contains a heuristic firing indicating it links to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains a URL that appears to be a lure for downloading a driver. The presence of a visual download button heuristic further supports this. The primary IOC is the malicious redirector URL.

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.cc/wix?keyword=hl+340+driver++windows+10
    • https://static.usrfiles.com/ugd/ad2ade_ce5c0265a69b43a186787892f39061f8.pdf
    • https://static.usrfiles.com/ugd/7dd30d_c49b6473fa3346e1bafb774608b491ac.pdf
    • https://static.usrfiles.com/ugd/7ea8bb_920b4976900b46cb96567d82f0834804.pdf
    • https://static.usrfiles.com/ugd/f1d680_4fa608aacb00450b948db20962e89192.pdf
    • https://static.usrfiles.com/ugd/b8c837_905e9cdaf7a34985affe289ff31e9f70.pdf
    • https://cdn.shopify.com/s/files/1/0434/1448/7190/files/gomudazekinonagijiviben.pdf
    • https://cdn.shopify.com/s/files/1/0445/7860/3172/files/bunch_of_thoughts_in_marathi.pdf
    • https://cdn.shopify.com/s/files/1/0429/2214/8003/files/moviescounter_tv_dual_audio.pdf
    • https://cdn.shopify.com/s/files/1/0431/0515/7284/files/dujajapasizejatili.pdf
    • https://cdn.shopify.com/s/files/1/0430/5358/0441/files/allegra_xarope_bula.pdf
    • https://cdn.shopify.com/s/files/1/0428/2243/4972/files/wunibun.pdf
    • https://cdn.shopify.com/s/files/1/0431/4975/4519/files/pedadunasuxarefatit.pdf
    • https://cdn.shopify.com/s/files/1/0461/8292/4441/files/degezivatepadafikumune.pdf
    • https://cdn.shopify.com/s/files/1/0462/7254/4917/files/blouse_neck_designs_2018_latest_images.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_off000067d5.bin
e8a1395ddd5695dd4d6b2a32799652e001ab046d4835003efc138144836e2d93		 pdf-font-stream PDF embedded font (sfnt) at offset 0x67D5 5168 bytes
font_01_sfnt_off00007996.bin
a1be0fead4b00674b2d446afe54e5bc79aec2d7e2acfa1c30954e7f8b141b3bc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7996 11964 bytes

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