Malicious PDF — malware analysis report

Static analysis result for SHA-256 555e9158e456f85f…

MALICIOUS

PDF

40.6 KB Created: 2020-03-27 12:40:12 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: f770dde9b377654300d944dd5ce68277 SHA-1: 575e545d69b157088f6fa84a2f43ff518b753430 SHA-256: 555e9158e456f85fdc6e4ca12e50eb643d1044febee27f725f9235fee94706b1
94 Risk Score

Malware Insights

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

The PDF contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic. The document body, though partially corrupted, includes a URL that appears to be a lure. The ML classifier strongly indicates maliciousness. The primary attack pattern involves directing users to a network of potentially malicious or SEO-abusing websites.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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://theinkparlourkelowna.ca/uploads/1/3/1/3/131384675/131384675.html#mind+power+john+kehoe+book
    • http://seatheswitch.com/uploads/1/3/0/3/130313049/tudumunuriwu.pdf
    • http://healermen.com/uploads/1/3/0/5/130588257/30ef5c.pdf
    • http://marialee.ca/uploads/1/3/0/7/130740097/6723887.pdf
    • http://tasmaniangarlicandtomatofestival.com/uploads/1/3/0/5/130551618/61cc9538f.pdf
    • http://studiolegalefestante.it/uploads/1/3/0/6/130604601/lufasovaruvubawawa.pdf
    • http://monteschoenstatt.org/uploads/1/3/0/6/130604716/1634343.pdf
    • http://www.glendabarrington.com/uploads/1/3/0/5/130543653/1779566.pdf
    • http://bridgeequityadvisor.com/uploads/1/3/0/6/130639926/zapogadugakug-zokoraj.pdf
    • http://bajalife.com/uploads/1/3/0/5/130547340/xaxapowugo-wanozisusuboxi-mexukufirovufav-jiwur.pdf
    • http://mrwhitchermath.com/uploads/1/3/0/9/130969819/maziripafokege.pdf
    • http://mistycarver.com/uploads/1/3/0/8/130874635/9228862.pdf
    • http://danielshanethomas.com/uploads/1/3/0/7/130738825/5466789.pdf
    • http://giresungiyim.com/uploads/1/3/0/8/130814675/4632a423.pdf
    • http://ertechnologyict.com/uploads/1/3/0/3/130313405/vawutatepafiponewur.pdf
    • http://northwestpolebuildings.com/uploads/1/3/0/6/130604077/jenegusemerisunumeba.pdf
    • http://fifthcolvmnracing.com/uploads/1/3/0/5/130588427/293e09eaa.pdf
    • http://alorraineweekes.us/uploads/1/3/0/5/130543087/5083567.pdf
    • http://lexiflynn.com/uploads/1/3/0/7/130739720/moxasawapu.pdf
    • http://ww1.cannonshop.com/uploads/1/3/0/4/130477346/zipujusigigan_befuzupuledo_xotimukelus.pdf
    • http://bigeaglelodge.com/uploads/1/3/0/8/130874359/tuxunujoris.pdf
    • http://ceimmobilien.com/uploads/1/3/0/6/130604231/luneguvagokubun.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_off000073ea.bin
24f594ef63ca11367cbcb9fc9a0d317c3c7eaee48dc820adb026bdb3307a394e
pdf-font-stream PDF embedded font (sfnt) at offset 0x73EA 8132 bytes