Malicious PDF — malware analysis report

Static analysis result for SHA-256 9bac87868374f4ed…

MALICIOUS

PDF

35.4 KB Created: 2020-09-20 03:36:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 491dfb6210a7accd7395a9d3f8cf71ea SHA-1: 350acfb84d0ddcbefddd8ec3d72d62b60107bc00 SHA-256: 9bac87868374f4ede42a8de9529f47e1643bfc4443e09bd2d9afca4cd0c3160c
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a heuristic firing for a malicious redirector link, which is also present in the document body. This link, 'https://ttraff.link/wix?keyword=hunger+games+catching+fire+download+in+hindi', is presented as a lure for downloading a movie. The file also exhibits characteristics of a link farm, with numerous embedded URLs pointing to PDF files, many hosted on cdn.shopify.com. The primary malicious IOC is the redirector URL, which likely leads to a malicious site or phishing attempt.

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.link/wix?keyword=hunger+games+catching+fire+download+in+hindi
    • https://cdn.shopify.com/s/files/1/0463/7815/6187/files/nidupefa.pdf
    • https://cdn.shopify.com/s/files/1/0431/5843/8039/files/55007738458.pdf
    • https://cdn.shopify.com/s/files/1/0439/4539/4331/files/dikufozorubosugik.pdf
    • https://cdn.shopify.com/s/files/1/0476/6207/1974/files/setejokogovilaw.pdf
    • https://cdn.shopify.com/s/files/1/0428/6880/1695/files/vorefiberizedus.pdf
    • https://cdn.shopify.com/s/files/1/0432/1447/1330/files/badminton_game_information.pdf
    • https://cc976ac5-b78e-4606-bb1f-8c7b2cbd8763.filesusr.com/ugd/8aba0c_2fa8c50aac4f47509e1f3d8ea42e86ad.pdf?index=true
    • https://8105d0b0-09b3-4b3d-baf9-5729ac9e64f4.filesusr.com/ugd/3615fb_948a536a31a540d9ad3b7b5a10e8001a.pdf?index=true
    • https://5b887953-cd62-4a94-a4c9-a401dbb9c3a6.filesusr.com/ugd/268ab1_cfb22f8be2a64b5cb66b63e9ec04aa27.pdf?index=true
    • https://cdn.shopify.com/s/files/1/0484/0931/3438/files/romeo_and_juliet_review_crossword_puzzle_answers.pdf
    • https://cdn.shopify.com/s/files/1/0434/0147/8300/files/christmas_piano_music_free.pdf
    • https://cdn.shopify.com/s/files/1/0433/6300/8664/files/viralaxibokaxisulus.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_off00004bb4.bin
edcbd95940722caaaab510c30c9698d7fc1196c9b47f7712606b454b74b3e5c5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4BB4 5488 bytes
font_01_sfnt_off00005e49.bin
6376b5890d9a9eee8e9303fdab2df320881930551bbf722f60f143cccb18ea06		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5E49 10084 bytes

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