Malicious PDF — malware analysis report

Static analysis result for SHA-256 5b8073b2f59e3f78…

MALICIOUS

PDF

44.7 KB Created: 2020-06-13 08:56:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: adf5713b639f566ac36f41a6cdb1f89b SHA-1: ac30ab7e7cc53df54992a7e31ecb3d7f2679327d SHA-256: 5b8073b2f59e3f7819df17bbce4303ad3231c2b31e550576ef28654301fac37e
96 Risk Score

Malware Insights

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

The PDF file contains numerous external links, identified by the PDF_SEO_LINK_FARM heuristic, suggesting a link farm or phishing attempt. The document body, though partially corrupted, includes URLs that are likely part of this lure. The ML classifier strongly indicated maliciousness, and the presence of embedded URLs points towards an attempt to redirect users to potentially malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://taracowellplain.com/uploads/1/3/1/4/131453130/131453130.html#osmanl%25C4%25B1ca+s%25C3%25B6zl%25C3%25BCk+tdk
    • http://hostmaster.facedoctors.co.uk/uploads/1/3/0/3/130313294/665788.pdf
    • http://mx.rebeccaprosper.com/uploads/1/3/0/3/130379575/dawasoxur-xawiwujebopi-pazikaw-nakeponiveguta.pdf
    • http://scholasticcollectibles.com/uploads/1/3/1/6/131637496/25b55.pdf
    • http://cellhomecelular.com/uploads/1/3/0/4/130483906/datigonupula-jopakokenaz.pdf
    • http://huntercopp.com/uploads/1/3/0/2/130272247/3587875.pdf
    • http://theglassworkspace.com/uploads/1/3/0/6/130639552/53f3bbb33c850f9.pdf
    • http://cpanel.cabincreekfarmstudio.com/uploads/1/3/1/0/131070566/gadorusupomob_vebate_janejati.pdf
    • http://mentoringbyarielle.com/uploads/1/3/1/4/131409333/dojirusoliz.pdf
    • http://asesoresdesegurosmanejar.com/uploads/1/3/1/4/131412858/tosowese-kuwisodejus-salamuvupem.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://rawekivop.files.wordpress.com/2020/06/41812255535.pdf
    • https://gipofonamu.files.wordpress.com/2020/06/xazutokixofelipuduru.pdf
    • https://pefeledegabo.files.wordpress.com/2020/06/zudagujo.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007ee1.bin
daf7b0022b279083f629d099c5137dfc925b51a1e835f55b02e0618554bea4f5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7EE1 12700 bytes

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