Malicious PDF — malware analysis report

Static analysis result for SHA-256 a30ae13d214f62b9…

MALICIOUS

PDF

43.1 KB Created: 2020-08-17 18:26:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 46e49404b40a664f74ad48fb11e520d3 SHA-1: 948f10af7a50be5a7e2108a63f1c19f2c63e3366 SHA-256: a30ae13d214f62b9deb12c87a4c3d8efcefd834b6c7d90d2de0e79fe2893eed1
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to external PDF files hosted on various domains. One critical heuristic identified a link to a known malicious redirector infrastructure at 'ttraff.com'. The document body, though heavily obfuscated, contains text related to 'citation apa format 6th edition' and the malicious URL, suggesting a lure to trick users into clicking through to potentially harmful content. No scripts were extracted from this sample.

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=citation+apa+format+6th+edition
    • http://mikiluv.tarotevolution.net/uploads/1/3/1/4/131437940/konabezogulosuwasuzu.pdf
    • http://jujuvudi.bayareabreastfeedingsupport.com/uploads/1/3/0/7/130739227/bopaf.pdf
    • http://files.mysportsmemory.com/uploads/1/3/2/6/132681482/4041562.pdf
    • http://files.wlu-science-chem-halabadleh.ca/uploads/1/3/0/8/130814758/piroxaxefakofoxi.pdf
    • https://cdn.shopify.com/s/files/1/0434/6878/3768/files/befelu.pdf
    • https://cdn.shopify.com/s/files/1/0437/1801/7175/files/3481694857.pdf
    • https://cdn.shopify.com/s/files/1/0436/9635/7530/files/fast_speed_video_er.pdf
    • https://cdn.shopify.com/s/files/1/0434/0000/3751/files/46911460413.pdf
    • https://cdn.shopify.com/s/files/1/0433/3830/1590/files/27319017028.pdf
    • https://cdn.shopify.com/s/files/1/0430/8611/9079/files/miridoxobipimulosalulibij.pdf
    • https://cdn.shopify.com/s/files/1/0447/9251/2678/files/42802626598.pdf
    • https://cdn.shopify.com/s/files/1/0431/8960/0414/files/78536431501.pdf
    • https://cdn.shopify.com/s/files/1/0431/5214/6587/files/twitter_finagle_guide.pdf
    • https://cdn.shopify.com/s/files/1/0444/4500/8039/files/general_biology_1_grade_12_module.pdf
    • https://cdn.shopify.com/s/files/1/0433/8352/1445/files/pitewi.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_off00006bbd.bin
256c65053386ea67cb7af9133a8e12ff5e93761a8826e8923103acdba86f4e1a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6BBD 5128 bytes
font_01_sfnt_off00007cfd.bin
388c09ce33df76548fecdca8ebc89f69e3947226a9d51e587e663d54265a4b00		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7CFD 10256 bytes

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