Malicious PDF — malware analysis report

Static analysis result for SHA-256 e73244c2b94d1ed9…

MALICIOUS

PDF

38.0 KB Created: 2020-03-13 05:56:27 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: caf6a8e2057f97e01955cdc71523cbbe SHA-1: 8d6463e052445e8df42a3f6a5a9e3e8a5471d150 SHA-256: e73244c2b94d1ed9bbed3d7e1ac4a9fc2316fb4e63b8565ed9c2db390e2bff37
94 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious File

The PDF file contains a large number of external links to other PDF documents hosted on various domains. This pattern is indicative of SEO poisoning or a link farm used to distribute malicious content or redirect users to phishing sites. The ML classifier strongly supports the malicious verdict. No scripts were extracted, and the document body is heavily obfuscated, but the presence of numerous external links is the primary indicator of malicious intent.

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://sales11-sip-phone.pleasingfood.com/uploads/1/3/0/2/130291724/130291724.html#agilent+hplc+1260+infinity+manual
    • http://thespottedlamb.com/uploads/1/3/0/6/130639588/rumadusi.pdf
    • http://happycamperllc.com/uploads/1/3/0/4/130436298/46ce8b7993d802.pdf
    • http://rlunivd.brdge.org/uploads/1/3/0/3/130323817/renaforosetilew-nirijamug-zutokutobar.pdf
    • http://countryandtown.mobi/uploads/1/3/0/5/130545189/5e4fdb2e002d29d.pdf
    • http://femmetotale.org/uploads/1/3/0/2/130289411/4794193.pdf
    • http://mymikef.com/uploads/1/3/0/7/130740340/godazodizofelatosuwi.pdf
    • http://arctictreasures.shop/uploads/1/3/0/5/130590393/6ac3de60bdfac.pdf
    • http://www.myfarmbureaunightmare.com/uploads/1/3/0/6/130622005/rigutelo.pdf
    • http://sheldonxink.com/uploads/1/3/0/3/130379228/zodazosunuwun.pdf
    • http://orabuilt.com/uploads/1/3/0/3/130379367/zisujukapo-lefozapen.pdf
    • http://www.omegaaccessories.net/uploads/1/3/0/2/130287930/xeniwasosisiri-nixagifapowaxex-gutis.pdf
    • http://www.goodlifejourney.org/uploads/1/3/0/6/130604582/4124bf5b6071b7.pdf
    • http://preparedmealstogo.com/uploads/1/3/0/7/130739564/4de65b2ae.pdf
    • http://soundcityreading.com/uploads/1/3/0/6/130604289/danesekenugijeba.pdf
    • http://www.mybluepot.com/uploads/1/3/0/7/130775104/lebumewupokunuj.pdf
    • http://www.progradeelectric.com/uploads/1/3/0/5/130588605/4826381.pdf
    • http://106redirect.com/uploads/1/3/0/2/130272483/vabusakozinim.pdf
    • http://fernleighdroughtmasters.com.au/uploads/1/3/0/8/130814526/5683302.pdf
    • http://pvstateofmind.net/uploads/1/3/0/4/130492038/tuvibe-xufigukojoti-bogaralo-folav.pdf
    • http://franquiciafuxion.com/uploads/1/3/0/6/130604129/senigofamomoba.pdf
    • http://www.orabaumanagementgmbh.ch/uploads/1/3/0/2/130270924/nigare.pdf
    • http://schallisflyfishing.de/uploads/1/3/0/7/130739993/50f3dfe03.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_off000070d6.bin
9073a921353d4590e1a07702d349f16c05e58f85356f85ae3711ed49afa8d60a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x70D6 6428 bytes

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