Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ca689d489472a0e…

MALICIOUS

PDF

50.8 KB Created: 2020-03-22 06:43:04 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: c0d8030f6def4761654968d0ef57cb47 SHA-1: 4a46ca3289a685fb40c49e9c280fce23f3473500 SHA-256: 7ca689d489472a0e20a1280012ab6872f1d0e5c4b791d0fd4d9d9c4de00e1109
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document contains a large number of external links, identified as a 'PDF_SEO_LINK_FARM' heuristic. The embedded document body text, though heavily obfuscated, contains URLs that point to external resources. These URLs are likely used to redirect users to malicious content or to manipulate search engine rankings. No scripts were extracted from this sample.

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://samantha-edwards.com/uploads/1/3/0/7/130775108/130775108.html#binding+of+isaac+contract+from+below+greed+mode
    • http://zipakit.com/uploads/1/3/0/9/130969027/refutalujos_gejoma_wadoxorirara.pdf
    • http://nwm8.club/uploads/1/3/0/4/130483632/7899605.pdf
    • http://www.mobil-krane.de/uploads/1/3/0/5/130539706/1543950.pdf
    • http://team-successes.com/uploads/1/3/0/4/130476215/momijexidiwewa_nosonom.pdf
    • http://assuredwildlifecontrol.com/uploads/1/3/0/3/130324112/lijebofosowesebu.pdf
    • http://kingscredit.org/uploads/1/3/0/8/130814559/dcca52491197f.pdf
    • http://www.lanebillingsphotography.com/uploads/1/3/0/6/130620509/6d8e2d21a15e2c.pdf
    • http://theapexbasketballtraining.com/uploads/1/3/0/5/130590416/vudadosuvududomeri.pdf
    • http://lurodriguez.es/uploads/1/3/0/7/130739081/4741626.pdf
    • http://72dmv.bpmtc.com/uploads/1/3/0/6/130622063/wafotusefasijeso.pdf
    • http://ilfuego.com/uploads/1/3/0/6/130620720/jewiviwo-nupepa.pdf
    • http://luchalibrevive.com/uploads/1/3/0/6/130639995/morafiropij.pdf
    • http://unlvtakebackthetap.com/uploads/1/3/0/3/130323355/4156303.pdf
    • http://amaralashdesign.co.uk/uploads/1/3/0/8/130874163/8400289.pdf
    • http://communitysafetytraining.org/uploads/1/3/0/4/130489331/e7135f113996.pdf
    • http://dadsburgersstl.com/uploads/1/3/0/8/130874153/2381477.pdf
    • http://asphalt-today.com/uploads/1/3/0/9/130969934/bibis_pekesagibed_mamavezasedizu.pdf
    • http://www.cloud.sentinel-air.com/uploads/1/3/0/4/130488688/1454674.pdf
    • http://newhopephotographylakeland.com/uploads/1/3/0/3/130312965/4ec782024bb32.pdf
    • http://evezandi.com/uploads/1/3/0/6/130640027/bevepuxiv.pdf
    • http://mail.ascension-columbus.org/uploads/1/3/0/5/130542728/dodatosovafese.pdf
    • http://display2u.com/uploads/1/3/0/7/130739573/769f0e89d8.pdf
    • http://www.stevejamesconsulting.com/uploads/1/3/0/2/130271128/wuwuvifa_deselasaf.pdf
    • http://74-123-79-27.mgwnet.com/uploads/1/3/0/7/130775299/7fa0b8e.pdf
    • http://bodanonline.co.uk/uploads/1/3/0/8/130874219/7866397.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_off00009c7c.bin
bc09ce0c3c0f3c486edb6b90ba117282cd0ce46a449128bdff3661ab92b950c4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9C7C 8408 bytes

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