Malicious PDF — malware analysis report

Static analysis result for SHA-256 1c3044b3d99f5a6e…

MALICIOUS

PDF

41.7 KB Created: 2020-08-28 16:21:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0464a374fcf87cba2c0743651c0a5423 SHA-1: 074bb513c911b03f2df1fabef18b857194bf3f9c SHA-256: 1c3044b3d99f5a6ef8fa8140c791cc99639e9bb34fcafff4c0c25106dfa6555a
150 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one specifically pointing to a known malicious redirector. The document body, though malformed, contains text related to 'Mercury outboard 15 hp 2 stroke manual' and includes the malicious URL, suggesting a lure for users searching for this information. The presence of a PDF link farm heuristic further indicates a malicious intent to redirect users to external sites.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=mercury+outboard+15+hp+2+stroke+manual
    • http://files.blessthischildministries.com/uploads/1/3/2/3/132303170/pavalabu.pdf
    • http://files.encorecookies.com/uploads/1/3/1/4/131437341/89416a76df0d53b.pdf
    • http://files.lemonbaydolphintours.com/uploads/1/3/0/8/130814127/8b68cd494.pdf
    • http://rubilo.agbio-inc.com/uploads/1/3/2/6/132683130/316ed0b4faced.pdf
    • https://cdn.shopify.com/s/files/1/0439/5961/5646/files/rufogegijefuxazu.pdf
    • https://cdn.shopify.com/s/files/1/0431/8127/7342/files/rotoxurexu.pdf
    • https://cdn.shopify.com/s/files/1/0440/1758/2230/files/zurosipixupagofudalajisif.pdf
    • https://cdn.shopify.com/s/files/1/0439/4690/1672/files/benji_bananas_mod_apk_latest_version.pdf
    • https://cdn.shopify.com/s/files/1/0432/7027/5237/files/lutav.pdf
    • https://cdn.shopify.com/s/files/1/0434/4807/4396/files/jevizamugokobigogiraloj.pdf
    • https://cdn.shopify.com/s/files/1/0437/4115/1386/files/guwugedubemibuxonavo.pdf
    • https://cdn.shopify.com/s/files/1/0427/9920/2467/files/47346719279.pdf
    • https://cdn.shopify.com/s/files/1/0433/7382/2102/files/arches_national_park_guide.pdf
    • https://cdn.shopify.com/s/files/1/0430/8526/7097/files/calcul_eclairage_aquarium_eau_douce.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_off00005810.bin
33624d188709fa5c5ae744fc1243dc91b2a002b3791161bc395befef3498857e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5810 5932 bytes
font_01_sfnt_off00006c2f.bin
751be7e908d2249b6713a6b211cc1d56e7ea512741c0481e42db08b98c422192		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C2F 14472 bytes

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