Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e826d6d2c0a5c64…

MALICIOUS

PDF

33.2 KB Created: 2020-03-15 07:55:45 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: fd1fdb711409ad705dff222ee02a4240 SHA-1: 565c17a570f7176fd5aa34c16852136abedd348c SHA-256: 4e826d6d2c0a5c6459d473bafc4f118a7077a2588db033255d0bee00c59a26cd
94 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, identified by the PDF_SEO_LINK_FARM heuristic, which are likely part of a link farm or phishing campaign. The document body, though partially corrupted, contains text related to 'Tv guide magazine subscription', suggesting a lure to entice users to click on the embedded malicious URLs. The ML classifier strongly flagged this PDF as malicious.

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://x0524609xstreamtravel.xsideas.com/uploads/1/3/0/2/130289428/130289428.html#tv+guide+magazine+subscription
    • http://beautyheading.com/uploads/1/3/0/5/130540026/vedikeramixinufidu.pdf
    • http://www.tuckerrash.ronrash.com/uploads/1/3/1/0/131071290/f489b45668.pdf
    • http://vps48149.sustainingpeople.nl/uploads/1/3/0/9/130969229/fd0d7d0c89e8.pdf
    • http://www.francescovalentina.com/uploads/1/3/0/5/130551153/wotomokegisuv-tadageremogu.pdf
    • http://www.tractionfitnessrepairs.com/uploads/1/3/0/5/130551089/mulatujinofiges_satapijigatipu_fizewum.pdf
    • http://digcitkids.org/uploads/1/3/0/4/130483592/logofofebisazix.pdf
    • http://muslyr.net/uploads/1/3/0/6/130620792/fesoxodaxesuxok.pdf
    • http://smpconsultingservices.com/uploads/1/3/0/7/130740623/1530374.pdf
    • http://jerseyreach.net/uploads/1/3/0/2/130289641/3d43f.pdf
    • http://quartzvanitydirect.com/uploads/1/3/0/7/130775199/27324c2e6d76b31.pdf
    • http://rinpochefilm.com/uploads/1/3/0/8/130813577/3251636.pdf
    • http://wagsonlinepetsuppply.com/uploads/1/3/0/9/130969837/muvukakutopad_pajofokas_salofipogifen.pdf
    • http://cloud.ezgsa.com/uploads/1/3/0/6/130620776/meremigufedajam_vojuzafamivoxir_ruwexum.pdf
    • http://oakwoodowls.com/uploads/1/3/0/2/130289332/xoxevopujafowus.pdf
    • http://meadowblastercustomturkeycalls.com/uploads/1/3/0/2/130272575/burefoxerituto.pdf
    • http://www.cultivateincome.com/uploads/1/3/0/8/130814355/9827899.pdf
    • http://drivebeehive.com/uploads/1/3/0/6/130639273/sefuvevevasowix-vorudevuvasi.pdf
    • http://thetradersgroup.org/uploads/1/3/0/5/130551356/zukibutisoti_lefutepufi.pdf
    • http://labsalonandbrowstudio.org/uploads/1/3/0/4/130478210/9392597.pdf
    • http://www.miltonfurtado.com/uploads/1/3/0/5/130588605/7968090.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_off00005d02.bin
b401b71aebde5c8bbc9209532447d41caf3ec9bc803a40cf105e5edbdff97cfb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D02 6508 bytes

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