Malicious PDF — malware analysis report

Static analysis result for SHA-256 f8b1606704b025a5…

MALICIOUS

PDF

56.2 KB Created: 2020-04-03 14:27:21 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 6345f8acb70da283d2125cb6899e3392 SHA-1: 674a95d12ce0e749728da9925d766ea7dcd26369 SHA-256: f8b1606704b025a5b7535d3dda957fc0c09752fc4f1d9c4c081359adc3da9a4a
62 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded external URLs, characteristic of a link farm designed to drive traffic to other sites. The heuristic 'PDF_SEO_LINK_FARM' specifically identifies this behavior, indicating a likely attempt to manipulate search engine results or distribute malicious content through a network of seemingly unrelated documents. The document body contains garbled text and references to 'wkhtmltopdf', suggesting it was programmatically generated rather than user-authored content.

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://holoholofuntravel.com/uploads/1/3/0/5/130590665/130590665.html#sistema+de+transmision+electronica+automotriz
    • http://signtime.org/uploads/1/3/0/8/130814293/762386.pdf
    • http://advantagebpm.net/uploads/1/3/0/8/130815097/jisokirumili.pdf
    • http://mylibruldad.com/uploads/1/3/0/2/130289675/tudufabafopawotutipa.pdf
    • http://trappedheart.com/uploads/1/3/0/5/130551023/rupipuwumege.pdf
    • http://comicjunky.net/uploads/1/3/1/4/131437174/a2f21a89fe8431c.pdf
    • http://sidewithstan.com/uploads/1/3/0/2/130272247/zekozulegedexivupeta.pdf
    • http://kozowski4sheriff.com/uploads/1/3/0/7/130739625/sexijavodiwede-bilumonejezu.pdf
    • http://susanbranton.com/uploads/1/3/0/6/130621061/suvolubuzerazato.pdf
    • http://divacyclinginitiative.org/uploads/1/3/1/3/131384436/bejuju-pawemoguzo.pdf
    • http://dropoutexchange.com/uploads/1/3/0/9/130969922/645c630.pdf
    • http://auweneyck.net/uploads/1/3/1/1/131163684/9053255.pdf
    • http://arizonamusicproject.com/uploads/1/3/0/6/130604039/rigaxixasiwe_jedod_paxixererexifon.pdf
    • http://hermanasfilm.com/uploads/1/3/0/5/130543787/1536986.pdf
    • http://bethminercreative.com/uploads/1/3/0/6/130640139/012d31fe07498.pdf
    • http://clevelandautorepairplus.com/uploads/1/3/0/2/130287727/dofegitajafubaz.pdf
    • http://menorah.church/uploads/1/3/0/6/130639946/0530f053e414.pdf
    • http://thecheckupapp.com/uploads/1/3/0/2/130287960/kosav.pdf
    • http://cherryhillspeech.com/uploads/1/3/0/7/130775084/nemavarojuponep.pdf
    • http://tjsfiercefitness.com/uploads/1/3/0/7/130739288/3058759.pdf
    • http://giorgiosboutique.com/uploads/1/3/0/6/130621378/3e83c15285c9cc.pdf
    • http://gethitchedweddingrentals.com/uploads/1/3/0/9/130969375/dinisapubexakedofen.pdf
    • http://marketplacegreen.net/uploads/1/3/0/6/130604026/97653add4.pdf
    • http://isitsecret.com/uploads/1/3/0/2/130289296/496f37048135290.pdf
    • http://wildskil.com/uploads/1/3/0/5/130539944/881715.pdf
    • http://wildskil.com/uploads/1/3/0
    • 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00009061.bin
2476250f86e59fc31b0786dbb3ce6b442947384120c755ecc965b484a7bbffef		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9061 9368 bytes
font_01_sfnt_off0000b22d.bin
e91619dfd4c72a85464d95ef1ba4e67df13020651c42071bafbe521a61d9f7fc		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB22D 2652 bytes
font_02_sfnt_off0000bb94.bin
779aa567746046747dac965df7fdfb06ff632674a0a99ce247a327bf89f0fa63		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBB94 16036 bytes

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