Malicious PDF — malware analysis report

Static analysis result for SHA-256 088f8a38f71b5c8b…

MALICIOUS

PDF

39.3 KB Created: 2020-03-24 12:04:52 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 3f41e0ef6b3027a2735e0b0d4b819eda SHA-1: 4ee97705cecab503a69f334bef4c5a1ad43311c2 SHA-256: 088f8a38f71b5c8bfb80c8a4c2d4981ce89013966bc5f7cd1610db48b6c806b2
156 Risk Score

Malware Insights

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

This PDF document was flagged by ClamAV as Pdf.Dropper.Agent-9310282-0 and by an ML classifier with high confidence. It contains a large number of embedded external links, suggesting a link farm or a distribution point for further malicious content. The document body is heavily obfuscated but contains references to URLs that are likely used to host or redirect to malicious payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • ClamAV: Pdf.Dropper.Agent-9310282-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-9310282-0
  • 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://tshirtmerchpa.com/uploads/1/3/0/6/130604689/130604689.html#enthalpy+chemistry+thermodynamics
    • http://collegeprepsavings.com/uploads/1/3/0/7/130775729/5542779.pdf
    • http://nekima.net/uploads/1/3/0/7/130775503/3281219.pdf
    • http://nchep2017.org/uploads/1/3/0/4/130483110/zesabivobetozib_demide_xenavivajeleje_jezonirusavor.pdf
    • http://www.jackbarripp.com/uploads/1/3/0/6/130620849/2665178.pdf
    • http://wwww.jelleleistra.nl/uploads/1/3/0/9/130969329/diguragelafina.pdf
    • http://hackspokane.com/uploads/1/3/0/6/130621298/wujogijoka_seguwamarotixa_rarokexagabasi_gafegotenamofu.pdf
    • http://www.health-hope-and-freedom.com/uploads/1/3/0/7/130739680/1bbe7.pdf
    • http://www.makersalli.com/uploads/1/3/0/9/130969083/6991108.pdf
    • http://progressionpropertiesllc.net/uploads/1/3/0/2/130289311/sesozebopovodapa.pdf
    • http://aprilhuntbooks.com/uploads/1/3/0/8/130814284/fodufetoke.pdf
    • http://www.btecconstruction.co.uk/uploads/1/3/0/7/130775052/d01567d8ab9b5.pdf
    • http://yolandaimpalasale.us/uploads/1/3/0/2/130291874/793780.pdf
    • http://rats-love.com/uploads/1/3/0/5/130543543/senuzugevudoraserid.pdf
    • http://vibrantthang.com/uploads/1/3/0/3/130323491/3289566.pdf
    • http://ideo.marketing/uploads/1/3/0/3/130313169/jafutusofex.pdf
    • http://www.brilliantenglish.org/uploads/1/3/0/9/130969963/2635810.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_off000072cf.bin
ecce0998bdcae794196707ffe5fe956a265bea9cb3ec63b62ad36cfbf47bf0f2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x72CF 7448 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.