Malicious PDF — malware analysis report

Static analysis result for SHA-256 8dc852fe53c191bd…

MALICIOUS

PDF

44.1 KB Created: 2020-03-14 13:51:14 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 103b23d95964347740e3f713cc45467b SHA-1: 6fa06f8f8324473f9487d50cddfa85bd170071da SHA-256: 8dc852fe53c191bd8489f6d1d9579b437b0946375c159769ac31b0ba5f09cb06
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. The ML classifier also strongly indicated maliciousness. The document body contains obfuscated text and references to advertisements and phone issues, likely as a lure. The primary attack pattern involves directing users to a link farm, which may host further malicious content or be used for SEO manipulation.

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://webdisk.dickersongreenseminary.org/uploads/1/3/0/8/130814716/130814716.html#adverts+on+my+android+phone
    • http://needa4th.com/uploads/1/3/1/1/131164573/vowobinedawogok-suriwobopije.pdf
    • http://ashleynixon.com/uploads/1/3/0/2/130289610/8db5f81909.pdf
    • http://mail.emmabarnett.org/uploads/1/3/0/8/130814416/2393875.pdf
    • http://mvleoclub.com/uploads/1/3/0/6/130604869/932178.pdf
    • http://www.gailsuberbiellephotography.shop/uploads/1/3/0/6/130639504/nixiluvesigaxomubir.pdf
    • http://tempodocs.com/uploads/1/3/0/7/130739810/sexepowora.pdf
    • http://theindianspringsapartments.com/uploads/1/3/0/3/130379326/1461265.pdf
    • http://momopets.co/uploads/1/3/0/3/130323547/xigimagu.pdf
    • http://inovolearning.com/uploads/1/3/0/5/130551564/zibowes.pdf
    • http://harrysbakery.org/uploads/1/3/0/6/130605263/liloropojapid.pdf
    • http://127onyork.com/uploads/1/3/0/5/130589077/wojamodiwutibirib.pdf
    • http://miekebreukelen.com/uploads/1/3/0/5/130542991/nudesijuriv-zonuwuzowa.pdf
    • http://mrchristensenclassroom.com/uploads/1/3/0/8/130874124/3230071.pdf
    • http://hierojakaisam.com/uploads/1/3/0/6/130620482/ce424243965.pdf
    • http://practicalityplus.com/uploads/1/3/0/6/130604886/dugifarup_kuvunix_niwomid.pdf
    • http://www.beaute-totale.com/uploads/1/3/0/5/130551668/571bec02e.pdf
    • http://www.xxfireworks.com/uploads/1/3/0/9/130969510/tujubufo.pdf
    • http://octoface.com/uploads/1/3/0/5/130550796/6539749.pdf
    • http://rgtechgeeks.com/uploads/1/3/0/6/130639755/8398050.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_off00008298.bin
79bd8b0492499099cd55fb2fa9e2494c176e80bbd7d220b207c263be85985e72		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8298 8412 bytes

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