Malicious PDF — malware analysis report

Static analysis result for SHA-256 850d7b28959193d4…

MALICIOUS

PDF

45.7 KB Created: 2020-04-17 23:56:19 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 4ed42b3fe7581a2cee2e6b126ea3a1b9 SHA-1: 5ced88a2aaf2711536de61028e5d6cfa3fd414cc SHA-256: 850d7b28959193d42e6b8a7878f8cea35bcbba6a76571f05a0ca6a09a3e7f0bc
62 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, many of which are hosted on newly registered domains and appear to be part of a link farm. The document body suggests a lure related to "Fema hazmat test answers" to entice users to click these links. No scripts were extracted from this sample, but the presence of numerous suspicious URLs indicates a phishing or redirection attempt.

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://colonialreinvestment.com/uploads/1/3/0/6/130639990/130639990.html#fema+hazmat+test+answers
    • http://anthonyramosblog.com/uploads/1/3/1/3/131398532/3b99ad.pdf
    • http://hmctrading.com/uploads/1/3/0/7/130739090/940a5da0c3913.pdf
    • http://koantravel.org/uploads/1/3/1/4/131453232/fuganuminale.pdf
    • http://bubblecrops.com/uploads/1/3/0/6/130604918/naluwerik-tavajaw-menazaf.pdf
    • http://equitab.eu/uploads/1/3/0/8/130873880/kizejifisamewegu.pdf
    • http://coplens.com/uploads/1/3/1/4/131454027/c4f5ec0c9896b0.pdf
    • http://barevisions.com/uploads/1/3/0/3/130323836/mukusasefibudig.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_off00008d41.bin
d823d486d651659ab6a328d7e410aadf36d43f3d475109e9749a175dbd42d0dc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8D41 7688 bytes

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