Malicious PDF — malware analysis report

Static analysis result for SHA-256 feb216140bcd02bf…

MALICIOUS

PDF

39.8 KB Created: 2020-05-15 05:25:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0f01e6ce7df2fd51fdd21282dc95dc28 SHA-1: 60066bd780111bd1d1dfe4c8b366eb6bc0026756 SHA-256: feb216140bcd02bf413da4e47daf7ce5d021a083ba116f6c8b78090c25b4af5c
94 Risk Score

Malware Insights

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

This PDF document was flagged by an ML classifier as malicious. It contains a large number of external links, many of which point to similarly structured URLs on various domains. This behavior is consistent with a link farm or a mechanism to distribute malicious content across many sites. The document body contains garbled text and what appears to be a reference to an 'armorsmith leveling guide gw2', suggesting a lure to attract users interested in gaming content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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://cultureclashvegas.com/uploads/1/3/1/3/131398231/131398231.html#armorsmith+leveling+guide+gw2
    • http://breeznetworks.com/uploads/1/3/0/6/130604258/rokafixel.pdf
    • http://bellavella.com/uploads/1/3/0/3/130323641/voxajagomata.pdf
    • http://fromblocktorock.com/uploads/1/3/1/1/131163981/8305323.pdf
    • http://sfcamperrental.com/uploads/1/3/0/6/130621784/1948b.pdf
    • http://summerrainmassage.com/uploads/1/3/0/9/130969505/fofos.pdf
    • http://rodneyreedbailbonding.org/uploads/1/3/0/6/130620230/verulusowojaxuxi.pdf
    • http://projectindianbeauty.com/uploads/1/3/0/3/130313272/5459231.pdf
    • http://everythingisupstream.net/uploads/1/3/0/3/130379297/8b22e494f212.pdf
    • http://suzattent.nl/uploads/1/3/0/7/130776083/a9234cbfb6.pdf
    • http://dearienphotos.com/uploads/1/3/0/6/130621788/8610208.pdf
    • http://stuartsladeforestschool.eu/uploads/1/3/0/7/130776590/serorapafatudov-gofabevog.pdf
    • http://piknchuse.com/uploads/1/3/0/7/130776885/sarivamowov_dugizitefi_sevipezadijo_vevam.pdf
    • http://becomeacontractor.com/uploads/1/3/1/0/131070771/xexesuvezuxuda-lixud-gomilured-bogilineziseji.pdf
    • http://emerdello.com/uploads/1/3/0/3/130379341/duruzape.pdf
    • http://synergylighttherapies.com/uploads/1/3/1/1/131163751/7468991.pdf
    • http://prettyproto.com/uploads/1/3/0/6/130603740/xajomid_wakadane.pdf
    • http://elevateyoureffort.com/uploads/1/3/1/3/131384135/fikafujamoj.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_off00006ccc.bin
a215da5b514e1c4b6f5f981720161cd1eb2e9f64f8e02122c2c03afd52161341		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6CCC 11480 bytes

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