Malicious PDF — malware analysis report

Static analysis result for SHA-256 cdf31e631bafcfc8…

MALICIOUS

PDF

45.3 KB Created: 2020-03-29 12:59:21 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2020-09-24
MD5: 54d6e2aa6aa6b2905c222549979c5662 SHA-1: aa53a0f3993327f7548f0b7874872d9e82497a4f SHA-256: cdf31e631bafcfc8da231212a561c2a5567d6775b8509264e52e10540defc90f
96 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded external links, a technique often used for SEO spam or to distribute malicious content. The heuristic 'PDF_SEO_LINK_FARM' specifically identifies this behavior, indicating the document's primary purpose is to host or redirect to numerous other PDFs. No scripts were extracted, and the document body is largely unreadable, but the extensive link farm strongly suggests a malicious intent to lure users or search engines to potentially harmful content.

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://nupelicanparty.org/uploads/1/3/0/3/130313588/130313588.html#national+languages+of+african+countries PDF link annotation
    • http://theblueberryman.ca/uploads/1/3/0/2/130273589/zokezemifiji-pefitokafijaru-volapafimazaw-bitoz.pdfIn PDF document text
    • http://satoribusk.com/uploads/1/3/1/0/131071113/wixomolojizemazuta.pdfIn PDF document text
    • http://therapielaurentides.com/uploads/1/3/0/3/130379246/makotu.pdfIn PDF document text
    • http://sporttilyoudrop.com/uploads/1/3/0/5/130590561/lixexixamulu-nojasutus.pdfIn PDF document text
    • http://lkdb.net/uploads/1/3/1/3/131380253/dc55e5.pdfIn PDF document text
    • http://davearmstrongmotors.com/uploads/1/3/0/6/130639972/fezetodoturiluxefa.pdfIn PDF document text
    • http://landclearinghoover.com/uploads/1/3/0/5/130539934/dulakafetuvatin-kitajewugo-ribojowon.pdfIn PDF document text
    • http://fitatthegym.com/uploads/1/3/0/7/130739994/7967665.pdfIn PDF document text
    • http://oflynnarchitects.net/uploads/1/3/1/3/131378953/3242053.pdfIn PDF document text
    • http://scopeclothing.co.nz/uploads/1/3/0/2/130289542/kiparedef.pdfIn PDF document text
    • http://masyou.net/uploads/1/3/0/7/130739175/nelexoxipilufo.pdfIn PDF document text
    • http://dealershipaccountingfirm.com/uploads/1/3/1/0/131070874/7868fc3d.pdfIn PDF document text
    • http://corelovepilatesbarre.com/uploads/1/3/1/0/131070602/fomapu-tujemivowun.pdfIn PDF document text
    • http://pescado-gabon.org/uploads/1/3/0/7/130775627/2f099f8.pdfIn PDF document text
    • http://oasisfirstcarellc.com/uploads/1/3/0/8/130814254/xodefinefilolewo.pdfIn PDF document text
    • http://topnotchtutoring.ca/uploads/1/3/0/4/130488063/zigipujafotidam-galakerule-satanes-nanev.pdfIn PDF document text
    • http://newmandarinseafoodrestaurant.com/uploads/1/3/0/6/130620991/751df4f31c4.pdfIn PDF document text
    • http://moorerepairs.com/uploads/1/3/0/3/130313158/zepuxozoliv.pdfIn PDF document text
    • http://zionseedfarm.com/uploads/1/3/0/7/130775634/pediga-voledinerawu-nulavowuberajir.pdfIn PDF document text
    • http://villarrealenergy.com/uploads/1/3/0/5/130539885/sigavinirimoburev.pdfIn PDF document text
    • http://wagnerdenverlaw.com/uploads/1/3/0/8/130814475/6302961.pdfIn PDF document text
    • http://sabandina.com/uploads/1/3/0/4/130489090/mozitukitegefag.pdfIn PDF document text
    • http://cameronwilliamboyd.com/uploads/1/3/0/6/130621614/2301081.pdfIn PDF document text
    • http://stampedetoner.ca/uploads/1/3/0/7/130776718/suduxoxija.pdfIn PDF document text
    • http://caitlinmorrison.com/uploads/1/3/0/3/130379479/zedemipeteni.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
🗂 Part of campaign: morganadvisory.org 3 samples

Related samples 1

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000086f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x86F4 8780 bytes
SHA-256: 2f99d25a94b0d2ca63a2ab2ca1f26eddd45925a98e09502f1beb81471da1f689

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