Malicious PDF — malware analysis report

Static analysis result for SHA-256 fc8d9d91cbda554c…

MALICIOUS

PDF

41.8 KB Created: 2020-08-17 12:38:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9676b82282f08c258767ae3b636d4eeb SHA-1: 8939d9fbacc4d47871452dfa4469c79b0eefb73c SHA-256: fc8d9d91cbda554c88a765ebda9322d4b7281ba4baafc85dddee4c042ee70392
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.com/pify?keyword=chunar+video++abcd+2'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded URLs, many hosted on Shopify. The document body, though heavily obfuscated, also contains the primary malicious URL. The primary intent appears to be directing users to malicious infrastructure via the ttraff.com redirector.

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=chunar+video++abcd+2
    • http://zogisobit.oxfordhistoricalsociety.com/uploads/1/3/0/8/130874038/36902.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/47475247643.pdf
    • https://cdn.shopify.com/s/files/1/0429/2729/2582/files/xikavup.pdf
    • https://cdn.shopify.com/s/files/1/0430/8051/5738/files/sipolufuk.pdf
    • https://cdn.shopify.com/s/files/1/0435/0096/1947/files/kuxotujizufirijefufozegat.pdf
    • https://cdn.shopify.com/s/files/1/0428/3275/6902/files/15269104322.pdf
    • https://cdn.shopify.com/s/files/1/0430/6989/8914/files/toniz.pdf
    • https://cdn.shopify.com/s/files/1/0432/4117/7252/files/jpg.pdf
    • https://cdn.shopify.com/s/files/1/0433/6458/1525/files/the_strategist_holiday_gift_guide.pdf
    • https://cdn.shopify.com/s/files/1/0430/7746/8327/files/64769276412.pdf
    • https://cdn.shopify.com/s/files/1/0438/0898/1153/files/sodajijivivopuxa.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000462e.bin
a6c8cb1f3588d9c9b3f42f78a9b93c0752e04e2d29f65b91b2da492d2d50f8e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x462E 4976 bytes
font_01_sfnt_off00005704.bin
96fb6e5d0dd93b463d1c55adf560fd29dd0e5ec79b1515eb480888d4099172d3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5704 13452 bytes
font_02_sfnt_off000081c7.bin
7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71		 pdf-font-stream PDF embedded font (sfnt) at offset 0x81C7 4324 bytes
font_03_sfnt_off00008fc8.bin
146bd0b3acef67ae1ca583a6ca77a389968adfdd4f2eada897d9c16809738125		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8FC8 2700 bytes

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