Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc7a5a617ba33324…

MALICIOUS

PDF

77.5 KB Created: 2020-04-20 22:51:27 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 785b872d7ada07b374e98666b5f6b0a8 SHA-1: dc268db53eb1276a1b3ed93c2def816fe4c882dd SHA-256: cc7a5a617ba33324443e8e14997480438b64b5a3953652b2fdae6a86ec07cd70
70 Risk Score

Malware Insights

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

The PDF contains a significant number of external links, indicating a link farm strategy. The heuristic 'PDF_SEO_LINK_FARM' specifically flags this behavior, suggesting the document is designed to funnel users through multiple domains. The presence of a 'download button' lure further supports a malicious intent to trick users into clicking links.

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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 http://sfbaytherapist.com/uploads/1/3/0/7/130738841/130738841.html#animal+odd+couples+worksheet
    • http://ardenmustard.com/uploads/1/3/0/6/130621896/donobakivafez.pdf
    • http://qskipapp.dk/uploads/1/3/0/5/130541308/1887d.pdf
    • http://zacatecascinema.com/uploads/1/3/0/7/130739776/d94d7ac3ea22.pdf
    • http://krysfit.com/uploads/1/3/1/4/131438707/rizudumosuk.pdf
    • http://ajauchinger.info/uploads/1/3/0/3/130313038/wuvizojar.pdf
    • http://leslieslunchbox.com/uploads/1/3/0/9/130969076/4631013.pdf
    • http://solaceelectricalsolutions.ca/uploads/1/3/0/3/130379638/sefapij.pdf
    • http://bhamorthopedicacupuncture.com/uploads/1/3/1/3/131380299/3878107.pdf
    • http://dbarts.org/uploads/1/3/0/4/130476276/477e462e2.pdf
    • http://communityvaluesderry.com/uploads/1/3/0/4/130488220/5880340.pdf
    • http://kongyegaartstudio.com/uploads/1/3/0/4/130492889/livaxoxagijaviweka.pdf
    • http://larnerinvestments.com/uploads/1/3/0/5/130589310/40f215cf06d045.pdf
    • http://loftsec.com/uploads/1/3/0/4/130476778/54c16020d.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 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010849.bin
1595a98aeef68a4e9f5dfa5ac534cef7f3fcf58b30f10c597f05ce190462367b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10849 8704 bytes

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