Malicious PDF — malware analysis report

Static analysis result for SHA-256 60c10489cda027d1…

MALICIOUS

PDF

104.1 KB Created: 2020-03-10 06:28:18 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 46a61516754e3a10ea3c10432956d77f SHA-1: c883ae8611cbedb6461def56c5c28e1d792acfcc SHA-256: 60c10489cda027d1cdbf75e79b74d38f771b41cd8e3544a50c90bee4cb62fa36
96 Risk Score

Malware Insights

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

This PDF document exhibits characteristics of a link farm, containing numerous external links to other PDF files hosted on various domains. The primary URL points to a page discussing 'agenda setting and priming,' which is likely a lure. The ML classifier strongly indicated maliciousness, and the PDF structure suggests an attempt to manipulate search engine results or distribute further malicious content.

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://marpalaceportuguese.devsite-1.com/uploads/1/3/0/2/130271085/130271085.html#what+is+the+difference+between+agenda+setting+and+priming
    • http://lenka-photography.com/uploads/1/3/0/2/130288310/bujapegasixak_vujatu_busuwatareja.pdf
    • http://trbutcher.com/uploads/1/3/0/4/130483389/e1a96edde0aa6.pdf
    • http://www.garagedoorrepair-san-clemente-ca.com/uploads/1/3/0/5/130589137/5545498.pdf
    • http://artichokesociety.org/uploads/1/3/0/5/130543276/niwowifino.pdf
    • http://refugeespeaker.org/uploads/1/3/0/5/130551517/posuf.pdf
    • http://www.yourluckycharms.com/uploads/1/3/0/7/130776446/rimov.pdf
    • http://nomnomgelato.com.au/uploads/1/3/0/6/130604610/fiteji.pdf
    • http://www.acp-ce.net/uploads/1/3/0/8/130813800/8310401.pdf
    • http://simpleups.com/uploads/1/3/0/7/130775821/4d6cc10dcda61.pdf
    • http://ecplusllc.com/uploads/1/3/0/3/130313783/603348.pdf
    • http://www.daniels-eplaw.com/uploads/1/3/0/4/130476277/2125247.pdf
    • http://naitrepourlire.org/uploads/1/3/0/7/130739053/97f9f91a61b5.pdf
    • http://mta-sts.mx.kokuryuushibas.net/uploads/1/3/0/6/130621989/9341966.pdf
    • http://triusrealestateinvestments.com/uploads/1/3/0/3/130313422/lamokuvilobilux-zanopatodaxuki-sureduxe.pdf
    • http://hostmaster.marcel-gatteaux.com/uploads/1/3/0/4/130476619/7011074.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • 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/
    • https://fedoraproject.org/wiki/Licensing/LiberationFontLicense

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000166c6.bin
349393068d561c98d345572e1cb4802362cb1100e98d7979931e9109df39af72
pdf-font-stream PDF embedded font (sfnt) at offset 0x166C6 8900 bytes
font_01_sfnt_off00018820.bin
41d5c9cb4d60b7530e3cfd93a78efd430fe179aa57a8296e74fb8a971da4b0ee
pdf-font-stream PDF embedded font (sfnt) at offset 0x18820 2600 bytes