Malicious PDF — malware analysis report

Static analysis result for SHA-256 d9eafd3ff9f5ef14…

MALICIOUS

PDF

42.7 KB Created: 2020-08-25 15:29:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3e029dd891391ec455e27ba7405b2e19 SHA-1: 662eb6907398d16bdc4c8b958c7037cf4214727d SHA-256: d9eafd3ff9f5ef1456653a048f0eced754be404347f5e2cd253b64dae6874cd8
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to external resources. One critical heuristic firing indicates that the PDF links to a known malicious redirector infrastructure at 'https://ttraff.cc/pify?keyword=abomasal+displacement+pdf'. The document body, though heavily obfuscated, also contains this URL, suggesting it is the primary lure. The presence of numerous other links, many hosted on cdn.shopify.com, indicates a link farm strategy to obscure the malicious destination.

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.cc/pify?keyword=abomasal+displacement+pdf
    • http://luwexexog.saloneco.net/uploads/1/3/0/7/130739892/bijojafotiwujozuripi.pdf
    • http://files.swrh.co.uk/uploads/1/3/1/0/131069879/c49922984d.pdf
    • http://rudemolo.campbnotjerseygirls.com/uploads/1/3/0/8/130813055/c9dd1b3.pdf
    • http://files.complete-service-builds.com/uploads/1/3/1/4/131453623/b26951979dc6b.pdf
    • http://files.monmouthmethodist.org/uploads/1/3/1/4/131437680/wemuperawewaso-gitidavejep.pdf
    • https://cdn.shopify.com/s/files/1/0430/9378/6791/files/botswana_economic_growth.pdf
    • https://cdn.shopify.com/s/files/1/0449/7453/8920/files/mach_3_manual.pdf
    • https://cdn.shopify.com/s/files/1/0433/2955/2552/files/tamenelevogekonevezu.pdf
    • https://cdn.shopify.com/s/files/1/0437/1123/4197/files/dufezuzokubudofizileraju.pdf
    • https://cdn.shopify.com/s/files/1/0434/4279/8757/files/ladug.pdf
    • https://cdn.shopify.com/s/files/1/0439/1020/1499/files/digitujakagilivureger.pdf
    • https://cdn.shopify.com/s/files/1/0440/9671/6952/files/29543273132.pdf
    • https://cdn.shopify.com/s/files/1/0434/4601/0022/files/pexeginuji.pdf
    • https://cdn.shopify.com/s/files/1/0431/1498/7674/files/zukosatiloko.pdf
    • https://cdn.shopify.com/s/files/1/0433/5799/5160/files/95342192496.pdf
    • https://cdn.shopify.com/s/files/1/0440/6411/2805/files/demolekad.pdf
    • https://cdn.shopify.com/s/files/1/0430/8277/6725/files/22857391575.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_off00006abf.bin
c93cea7bcf821b84bbcf208c2f79ed10b6f329827def6a9261fb4676728350af
pdf-font-stream PDF embedded font (sfnt) at offset 0x6ABF 5332 bytes
font_01_sfnt_off00007cc4.bin
a73fed0bf80d3a47f9c0d7c14305aebf7c716dfff26a375aab72127877574484
pdf-font-stream PDF embedded font (sfnt) at offset 0x7CC4 9732 bytes