Malicious PDF — malware analysis report

Static analysis result for SHA-256 3fb55519b284dd6d…

MALICIOUS

PDF

41.9 KB Created: 2020-08-05 06:38:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6a53766105f9358a46545f97bb363eb5 SHA-1: 798e3c5c583b04efbf79e4f90785677ce388d717 SHA-256: 3fb55519b284dd6d7ce8c767f3340e48975787166060ef7d5782a82ca359cda7
120 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one identified as a malicious redirector pointing to 'ttraff.com'. The document body, though heavily obfuscated, includes the same URL, suggesting a lure to download further content. The presence of a link farm heuristic further indicates a malicious intent to distribute links, likely for phishing or malware distribution.

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=cbse+class+10+sample+paper+2020+pdf+download
    • http://files.rathbeaghfarmhouse.com/uploads/1/3/2/6/132681026/loguweri.pdf
    • http://files.hardawayart.com/uploads/1/3/0/7/130739163/dinap_kimutes_rakokazoxa_mudemukupez.pdf
    • http://files.mrbalwayscare.com/uploads/1/3/1/0/131070452/8167746.pdf
    • http://files.leewen.republicofdaydreams.com/uploads/1/3/1/4/131452922/bamatud_mozufiluwonak_wivetu.pdf
    • http://files.groundcreations.net/uploads/1/3/1/6/131607010/ledakasuboxagage.pdf
    • https://cdn.shopify.com/s/files/1/0432/7515/7670/files/titedegomogesopafu.pdf
    • https://cdn.shopify.com/s/files/1/0434/5567/6568/files/17876052412.pdf
    • https://cdn.shopify.com/s/files/1/0432/4530/6011/files/kawamonuki.pdf
    • https://cdn.shopify.com/s/files/1/0434/3591/7464/files/yard_man_mower.pdf
    • https://cdn.shopify.com/s/files/1/0428/1335/8247/files/72766939461.pdf
    • https://cdn.shopify.com/s/files/1/0435/6125/5073/files/potuneb.pdf
    • https://cdn.shopify.com/s/files/1/0432/4560/0931/files/61097378929.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xifenawapuvesuf.pdf
    • https://cdn.shopify.com/s/files/1/0435/2750/4024/files/72330839481.pdf
    • https://cdn.shopify.com/s/files/1/0434/7602/5497/files/48448297415.pdf
    • https://cdn.shopify.com/s/files/1/0435/5158/8507/files/bizokofosaxakow.pdf
    • https://cdn.shopify.com/s/files/1/0434/6055/9013/files/tutosedaturijeluvoboxaf.pdf
    • https://cdn.shopify.com/s/files/1/0429/9050/2042/files/92938351421.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_off000063e6.bin
4240276e86178613db3b6a109f57c73060192436b529a939774866c4158281fc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x63E6 5764 bytes
font_01_sfnt_off0000777f.bin
de6eeac03d3a12b8cc5c38ab803c2a1b53f78a9dec65c69cce2893118f6a0c1c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x777F 10212 bytes

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