Malicious PDF — malware analysis report

Static analysis result for SHA-256 c45e2ba742945ae3…

MALICIOUS

PDF

39.7 KB Created: 2020-03-11 05:01:27 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: c60af2eff5e168733e7bf1b2bc660166 SHA-1: 4dc1719925e5c997c288650cd32c0c8bc4a62735 SHA-256: c45e2ba742945ae3c7ce8892cb1d73daa6b1b8024a815415be4f2a5df9ff0010
94 Risk Score

Malware Insights

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

The PDF file contains a large number of external links to other PDF files hosted on various domains, indicative of a link farm or SEO abuse. The ML classifier strongly flagged this PDF as malicious. The primary attack pattern involves directing users to a network of potentially malicious or ad-filled PDF documents hosted across numerous domains.

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://www.foodinnovationstown.com/uploads/1/3/0/7/130775825/130775825.html#key+differences+between+bacteria+and+archaea
    • http://tedsclothing.com/uploads/1/3/0/5/130540700/19916e.pdf
    • http://royaltramp.shop/uploads/1/3/0/7/130739502/9552913.pdf
    • http://lynalen.com/uploads/1/3/0/6/130621470/bazazivogav-zaxid.pdf
    • http://nautydoggundogkennels.com/uploads/1/3/0/4/130477490/4334685.pdf
    • http://oakridgefootballbooster.com/uploads/1/3/0/5/130588376/bumalakomimurojixexe.pdf
    • http://christiezimmer.ca/uploads/1/3/0/5/130588749/b0e193b.pdf
    • http://eolefrance.com/uploads/1/3/0/7/130739962/fojevoroli_liruxuxi.pdf
    • http://mellowspaparties.com/uploads/1/3/0/7/130739917/70cf149.pdf
    • http://opbalphabetnyc.org/uploads/1/3/0/5/130548108/3a7e2d120e7.pdf
    • http://angelcleaningservice.net/uploads/1/3/0/4/130489172/1417220.pdf
    • http://miseenplace1101.com/uploads/1/3/0/4/130483629/6f912b09c11.pdf
    • http://plaid2pumps.com/uploads/1/3/0/5/130542780/nopanuxoxaxinimur.pdf
    • http://www.jesusisoursheperdministry.com/uploads/1/3/0/6/130604259/0efa5.pdf
    • http://allaboutgreenvillesc.com/uploads/1/3/0/5/130543264/nogowe-xatutip-lesomafe.pdf
    • http://elpacifico2hoa.com/uploads/1/3/0/8/130874095/2009362.pdf
    • http://jhoannaroa.com/uploads/1/3/0/7/130775171/9566132.pdf
    • http://twistedclothing.com.au/uploads/1/3/0/7/130739183/4375921.pdf
    • http://pellikaanonroerendgoedbeheer.nl/uploads/1/3/0/4/130483337/pegula.pdf
    • http://www.selfloveinplainsight.com/uploads/1/3/0/6/130640231/0b1aa5531388e2.pdf
    • http://mean-muggin.com/uploads/1/3/0/6/130621194/7587008.pdf
    • http://exeunt.org/uploads/1/3/0/8/130813777/suveg.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000691e.bin
85be4cb3cc03a6dae0f6eda559ef585cf3864212ca7754808c595ae7cdc5050f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x691E 7564 bytes
font_01_sfnt_off000086b8.bin
a43b702c1ad01ce973872bad3280a2e679e345b633fa0659c670c80b626dd65b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x86B8 2712 bytes

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