Malicious PDF — malware analysis report

Static analysis result for SHA-256 b903a961eda30eb2…

MALICIOUS

PDF

36.5 KB Created: 2020-03-20 08:21:54 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 7753f77b717a632f2c50e6e4da7f4e2c SHA-1: 686e3686803b5d781c2c9ff278c5b383fb9e098c SHA-256: b903a961eda30eb22f4f8fa81e78738e6b16249e050418a0de75b61c877da69b
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of embedded external links, identified by the PDF_SEO_LINK_FARM heuristic. The primary purpose appears to be directing users to various websites, such as http://hemperorgaia.com/uploads/1/3/0/2/130270902/130270902.html#cuantos+tipos+de+galaxias+espirales+existen and http://goss-p.com/uploads/1/3/0/5/130588505/finijobotiveno-buwulen.pdf. This technique is often used for SEO manipulation or to host further malicious content, making the document a potential delivery mechanism.

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://hemperorgaia.com/uploads/1/3/0/2/130270902/130270902.html#cuantos+tipos+de+galaxias+espirales+existen
    • http://goss-p.com/uploads/1/3/0/5/130588505/finijobotiveno-buwulen.pdf
    • http://therapyinnovations.net/uploads/1/3/0/2/130273980/4486071.pdf
    • http://abigailrosenfeld.com/uploads/1/3/1/1/131163751/gomagebepoku-kasineba.pdf
    • http://labtcenter.com/uploads/1/3/0/2/130288430/1119481.pdf
    • http://casadelasuerteylafortuna.com/uploads/1/3/0/4/130483205/a28757d2727.pdf
    • http://mysticdownloads.com/uploads/1/3/0/5/130547515/7222939.pdf
    • http://cannapetmeds.org/uploads/1/3/0/6/130639393/nenagofogijus-worimedadarogo-susuj-zuvipi.pdf
    • http://dfwlandscapesystems.com/uploads/1/3/0/6/130620228/lobazeperokedosa.pdf
    • http://hostmaster.niteknight.com/uploads/1/3/0/7/130739618/6636371.pdf
    • http://savannahceramics.com/uploads/1/3/0/5/130588499/2bc2bd0b09d2.pdf
    • http://johnshields.ca/uploads/1/3/0/7/130740489/dokemexux_pumesemo_mezugemije.pdf
    • http://zeroware.org/uploads/1/3/0/4/130483305/6306757.pdf
    • http://dalexward.net/uploads/1/3/0/6/130621068/2744039.pdf
    • http://jennymountainonline.org/uploads/1/3/0/8/130813448/1559155.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_off00006859.bin
8c21260342f57d85d69b832a4fe97746f5f72de41e877ee42dcb93f86c4879a7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6859 7728 bytes

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