Malicious PDF — malware analysis report

Static analysis result for SHA-256 77fc3a8db163109b…

MALICIOUS

PDF

43.1 KB Created: 2020-03-24 01:56:30 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 46f70a58d06a9d6520cf44d5829c8174 SHA-1: c2074bf42c8816b0589e9d980824c838fe457c39 SHA-256: 77fc3a8db163109b55ca012e318d05f1f1695ebf2f12ff65d2bd70ddaaa7f6d7
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic. These links point to various PDF files hosted on different domains, suggesting a link farm or SEO spam operation. The document body contains a title related to a Morse code translator, which appears to be a lure to disguise the malicious nature of the links. No scripts were extracted from this sample.

Heuristics 3

  • 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.
  • 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://freedfocusliving.com/uploads/1/3/0/5/130543053/130543053.html#c%C3%B3digo+morse+tradutor+online
    • http://coolcupz.com/uploads/1/3/0/3/130313470/969b9953.pdf
    • http://buildingbiodiversity.club/uploads/1/3/0/6/130605422/47377c1.pdf
    • http://www.teammba904.com/uploads/1/3/0/7/130775940/sozinekijixovabis.pdf
    • http://maxrysztak.com/uploads/1/3/0/6/130604488/birasamokixe.pdf
    • http://musicprodnotes.com/uploads/1/3/0/7/130776177/sofanazeworak.pdf
    • http://mysmartinspection.com/uploads/1/3/0/4/130483697/gesuvak.pdf
    • http://chicagodatacenterrealestate.com/uploads/1/3/0/3/130324418/33b5be6c7.pdf
    • http://liquidatornl.ca/uploads/1/3/0/2/130274338/tubofuvax.pdf
    • http://sweetasthingz.com/uploads/1/3/0/5/130590508/zexoke_sifiwo_bukiwoxafudeva.pdf
    • http://vamatabeauty.com/uploads/1/3/0/2/130272945/576112.pdf
    • http://ritetime-4kds.services/uploads/1/3/0/3/130379548/1228738.pdf
    • http://makethelemonade.com/uploads/1/3/0/6/130620716/2202560.pdf
    • http://www.uselessbayknits.com/uploads/1/3/0/7/130739478/sixet.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_off00007a49.bin
d51d75bbefd145c45f442bfa1c2bb484aa050447e987b4a476a6c7e712a58a4c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7A49 10692 bytes

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