Malicious PDF — malware analysis report

Static analysis result for SHA-256 ef50e472a70d7097…

MALICIOUS

PDF

41.5 KB Created: 2020-04-03 20:42:09 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 8326b79463b296da68ec12b7c392c274 SHA-1: 5c230c1514aacfdad5806c6d3428cb5ff5be9381 SHA-256: ef50e472a70d70976d61019e4e9a514fcf0d47aecff26625bcb0f2089d5b7e2f
130 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded external links, many of which appear to be part of a link farm. The document also explicitly requests recovery secrets or private keys, a common lure for phishing or credential harvesting. The presence of a call-to-action phrase further supports a malicious intent to trick the user into clicking a link and divulging sensitive information.

Heuristics 5

  • 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.
  • Recovery secret / private key request critical SE_SECRET_RECOVERY_LURE
    Document requests recovery phrases, private keys, backup codes, or saved passwords. Requests for these secrets in a document are high-risk.
  • 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://txgovsmms.com/uploads/1/3/0/7/130739275/130739275.html#fortinet+firewall+600d+configuration
    • http://sportsdreamjob.com/uploads/1/3/1/3/131379041/bibimi-navamijim.pdf
    • http://annaravenscroft.com/uploads/1/3/0/6/130605263/jiwawujasusokugo.pdf
    • http://mikrodrafthouseandgrill.com/uploads/1/3/0/7/130738541/6455339.pdf
    • http://blendednursing2017.com/uploads/1/3/0/2/130289485/2712048.pdf
    • http://chungcuhungyen.com/uploads/1/3/1/3/131383928/zarabokomesodap.pdf
    • http://kid-fitz.com/uploads/1/3/0/7/130739177/toweje-vezikarotu-lobuzeziwix-kafomatedure.pdf
    • http://servilleoy.net/uploads/1/3/0/7/130738731/miwobubul-kuwine-guximipuroluvam.pdf
    • http://gaybies.us/uploads/1/3/0/6/130620632/5737308.pdf
    • http://brandondavisonline.com/uploads/1/3/0/7/130775269/rikujajiterexog-zomivawovul-zamomovasu-mibopuvipoze.pdf
    • http://elliottwheelerthelongtimepreview.com/uploads/1/3/0/7/130739697/4266216.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_off000076e2.bin
8cfa09d4e39d2184b5a74ef611b019937606efdfa0ef820e935034eb15c8674e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x76E2 8548 bytes

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