Malicious PDF — malware analysis report

Static analysis result for SHA-256 4fc72322f26204c6…

MALICIOUS

PDF

97.7 KB Created: 2021-03-03 01:04:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: e8f46ca79f69552b33eee1d0ec740e9f SHA-1: 9946e3ee3f6637e6d328a944e3fc11431ad87b8e SHA-256: 4fc72322f26204c6f81c965999d777a596b058a90fbc63ec7957f8cd3c0d6b8c
156 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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 https://resalured.ru/wix?keyword=sunjoy+archwood+gazebo+manual PDF link annotation
    • https://zuwukozoxuwiged.weebly.com/uploads/1/3/4/7/134713444/6177916.pdfIn PDF document text
    • http://fakaripeti.xyz/vobugujomxxesa.pdfIn PDF document text
    • https://pamimimafe.weebly.com/uploads/1/3/0/7/130775080/95431b01.pdfIn PDF document text
    • http://d2-club.ru/kujaxojipaturapokorames95n6o.pdfIn PDF document text
    • https://jeredesuju.weebly.com/uploads/1/3/4/4/134432205/judataz.pdfIn PDF document text
    • http://afracheat5.xyz/install_waterboss_9007mahj.pdfIn PDF document text
    • https://lurenosofen.weebly.com/uploads/1/3/0/7/130740325/2736245.pdfIn PDF document text
    • https://mafopovum.weebly.com/uploads/1/3/4/3/134322216/pisab_kopevibajeweb_wenuvodiv_rerajij.pdfIn PDF document text
    • http://menbp.online/52013591833zv5iw.pdfIn PDF document text
    • https://jowidizikut.weebly.com/uploads/1/3/0/8/130874332/1559931.pdfIn PDF document text
    • https://puwevifu.weebly.com/uploads/1/3/4/4/134465284/db7edd2df39763.pdfIn PDF document text
    • http://alifan.store/tunilemaxotixijed6pnn.pdfIn PDF document text
    • https://tuxibefogeja.weebly.com/uploads/1/3/4/3/134359070/674032.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/xabalaru/nasowivevuxonira.pdfIn PDF document text
    • https://s3.amazonaws.com/jolozidabi/rusexafufovidijufasedowex.pdfIn PDF document text
    • https://s3.amazonaws.com/bupaxomu/nalavavaradul.pdfIn PDF document text
    • https://s3.amazonaws.com/fosawef/xutizawuzi.pdfIn PDF document text
    • https://s3.amazonaws.com/kotenu/lenajitirofirapubusodomig.pdfIn PDF document text
    • https://s3.amazonaws.com/davawina/chronicle_display_font_free.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
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000142e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x142E0 5736 bytes
SHA-256: 712e0643e540993c7db45083208b3ad5eba4b9d60c8146736d8e7141c2c1ee89
font_01_sfnt_off0001565f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1565F 10196 bytes
SHA-256: 7536a268210586154018939fd81a4b521c98060a583c74ae23b2f3aa5ec00f89

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