Malicious PDF — malware analysis report

Static analysis result for SHA-256 b06245aee6c11044…

MALICIOUS

PDF

42.5 KB Created: 2020-03-28 04:31:38 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 2c49050eca830bac02b02aade578c756 SHA-1: cdf72f0819fd0e2bbcc6e689094a91368dafa7ba SHA-256: b06245aee6c1104440e7433af39ee1105947f1bdbb6635404ce7373f80432cc9
96 Risk Score

Malware Insights

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

The PDF file contains numerous external links, identified by the PDF_SEO_LINK_FARM heuristic, suggesting a link farm or SEO abuse tactic. The document body, though partially obfuscated, mentions 'Chronological study bible niv' and the authoring application 'wkhtmltopdf', indicating a potential lure to redirect users to malicious or spam content hosted on domains like primestate.net and driver8studio.com. No scripts were extracted, limiting the analysis of direct malicious actions.

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://primestate.net/uploads/1/3/0/8/130815277/130815277.html#chronological+study+bible+niv
    • http://www.driver8studio.com/uploads/1/3/0/7/130775758/guvato_budikotapuvuxif_puberoduwaladox.pdf
    • http://volumesalon.me/uploads/1/3/0/5/130550879/0c2de60.pdf
    • http://manaspringstudios.com/uploads/1/3/0/6/130621402/vaxozul-timodesekida-tatobajus.pdf
    • http://mindfulnessmatters.online/uploads/1/3/0/6/130621459/f260e71125.pdf
    • http://www.sherwoodrooster.com/uploads/1/3/0/5/130588783/29f1ae0.pdf
    • http://knowtinysecrets.com/uploads/1/3/0/5/130551739/2cc16d9996206.pdf
    • http://cakenetwork.us/uploads/1/3/0/4/130436068/6888302.pdf
    • http://webmail.lucaselliottart.com/uploads/1/3/0/6/130620796/2840058.pdf
    • http://www.analyticsplayground.org/uploads/1/3/0/3/130313524/1911940.pdf
    • http://noblesrealtygrp.com/uploads/1/3/0/6/130603692/7863618.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_off00007db5.bin
20a2c4a0842defa69c9556a4ffe43906c43815f4ff9529ccc8573295f4f64cb1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7DB5 7740 bytes

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