Malicious PDF — malware analysis report

Static analysis result for SHA-256 2487aa780208fcfe…

MALICIOUS

PDF

39.9 KB Created: 2020-06-02 14:26:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1aba432ebb453db94803040dc2fd1cd5 SHA-1: b638e85f96974f9c334e31e7ac18ef584c723716 SHA-256: 2487aa780208fcfee802083ebcb49f23999e5c4fb68a78c8e5db7e3a90fe18e0
94 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious File

The PDF document contains a large number of external links to other PDF files hosted on various domains, a technique commonly used for SEO poisoning or to redirect users to malicious content. The ML classifier strongly indicated maliciousness. The document body contains metadata and a URL that aligns with this SEO-based link farm attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://wegranic.com/uploads/1/3/0/4/130483479/130483479.html#a+christmas+carol+powerpoint
    • http://jephpayne.com/uploads/1/3/1/4/131453127/kewoxigawifakajit.pdf
    • http://bewellbefitsxmphysicaltherapy.com/uploads/1/3/0/4/130435927/4478831.pdf
    • http://jacobstreeservicema.com/uploads/1/3/1/6/131636858/3062454.pdf
    • http://wizardofov.org/uploads/1/3/1/8/131871864/biborodiwuloxadimevu.pdf
    • http://edc0.stacks411.com/uploads/1/3/0/7/130738785/refojemur_popupafewopir.pdf
    • http://thejcflea.com/uploads/1/3/1/3/131380397/manubuzax.pdf
    • http://318cvadenver.com/uploads/1/3/0/4/130476525/6208011.pdf
    • http://speelkoning.net/uploads/1/3/1/3/131398406/vefewuvipizab.pdf
    • http://farmbilt.com/uploads/1/3/0/6/130621321/fibilulikesoponan.pdf
    • http://wegranic.com/uploads/1/3/0/4/130483479/terms.html
    • http://wegranic.com/uploads/1/3/0/4/130483479/dmca.html
    • http://wegranic.com/uploads/1/3/0/4/130483479/policy.html
    • https://fujipoveju.files.wordpress.com/2020/05/sawurumigulibotipigar.pdf
    • https://zezumova.files.wordpress.com/2020/05/kijelojojuvafa.pdf
    • https://ranatokoko.files.wordpress.com/2020/05/fonoz.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_off00006c51.bin
b8691c356c374e95eb9b92ee68a18d95de37f8477637ff2b418989d7ce037fe1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C51 11924 bytes

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