Malicious PDF — malware analysis report

Static analysis result for SHA-256 debda6fe942efaa1…

MALICIOUS

PDF

40.9 KB Created: 2020-08-24 18:29:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8ee32eca749095af700844980d2c538b SHA-1: 045edac0b851f7d22c6678cba62db294e5fd903e SHA-256: debda6fe942efaa1e8a941dcd4ab83c648becd9ac04a461066df11797bcc9183
120 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded links, many of which point to a link farm hosted on cdn.shopify.com. One critical heuristic identified a link to a known malicious redirector at ttraff.com, which is likely the primary payload delivery mechanism. The document body, though heavily obfuscated, contains the URL 'https://ttraff.com/pify?keyword=car+wallpapers+for+iphone', suggesting a lure related to wallpapers to entice clicks to the malicious 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=car+wallpapers+for+iphone
    • http://files.manetaspark.net/uploads/1/3/2/8/132815190/tulamuwi-vadejuvijatuv.pdf
    • http://files.22shotsofmoodzandhorror.com/uploads/1/3/2/8/132816165/3047340.pdf
    • http://kilifod.beworldwise.com/uploads/1/3/0/7/130738697/9260663.pdf
    • https://cdn.shopify.com/s/files/1/0428/1512/7708/files/academic_research_writing.pdf
    • https://cdn.shopify.com/s/files/1/0434/3224/7457/files/21875853226.pdf
    • https://cdn.shopify.com/s/files/1/0433/0605/7888/files/lofedekadifipavufu.pdf
    • https://cdn.shopify.com/s/files/1/0436/3023/1712/files/witcher_3_claywich.pdf
    • https://cdn.shopify.com/s/files/1/0427/5824/2470/files/66687799808.pdf
    • https://cdn.shopify.com/s/files/1/0430/8064/6807/files/keguwepetokusazuluti.pdf
    • https://cdn.shopify.com/s/files/1/0435/0004/4440/files/devenir_2018_year_end_report.pdf
    • https://cdn.shopify.com/s/files/1/0430/6462/3265/files/bitexedopo.pdf
    • https://cdn.shopify.com/s/files/1/0429/8801/1673/files/fourier_transform_coefficient_calculator.pdf
    • https://cdn.shopify.com/s/files/1/0433/3387/7915/files/bajaj_pulsar_150_bs4_spare_parts_catalogue.pdf
    • https://cdn.shopify.com/s/files/1/0428/3770/4867/files/45116411001.pdf
    • https://cdn.shopify.com/s/files/1/0429/6785/9359/files/39890560284.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_off000062a4.bin
5e8fad464f1d152c039b98c677d27ad352086255751ab98f4974ecee045d00cb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x62A4 4984 bytes
font_01_sfnt_off000073a6.bin
7043950bcddc08c1de328e663a5c7980f30a44c0afe86268d3da800bc35355d5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x73A6 10312 bytes

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