Malicious PDF — malware analysis report

Static analysis result for SHA-256 6af834d220606e8f…

MALICIOUS

PDF

74.8 KB Created: 2021-02-18 04:53:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: b62b31979ca0e50c3d8e10ca6bb45d7e SHA-1: 58129bb81916bab1ceb85ae3845c8deb9f91f0ca SHA-256: 6af834d220606e8f8b6dd409137ce1245ba5b984dde3fd53f8fa4099bf7df7db
156 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as a phishing trojan. The file contains numerous external links, including a link farm, and embedded URLs that point to potentially malicious domains. The primary attack pattern involves directing users to external sites, likely for phishing or to download further malicious content.

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://maypoin.ru/wix?keyword=oscuro%2527s+oblivion+overhaul+guide PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4421460/normal_5fee9a656b324.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4451356/normal_5feb57cc94217.pdfIn PDF document text
    • http://doordash.fun/defender_90_for_sale_ukhnn1g.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379844/normal_601af28693bf1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368495/normal_5fee8ccc9e8fe.pdfIn PDF document text
    • https://zipadufemawosep.weebly.com/uploads/1/3/1/3/131398243/7d758ff5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4485436/normal_6001db5488f93.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4384464/normal_5fdfabe2715ac.pdfIn PDF document text
    • http://salleop.xyz/57463022884k4y0d.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/wikurixobelu/antenna_fuse_odg_video.pdfIn PDF document text
    • https://s3.amazonaws.com/wofaxil/darksiders_2_deathinitive_edition_trophy_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/sejakopa/66213630061.pdfIn PDF document text
    • https://s3.amazonaws.com/tajimipojimo/onkyo_tx_nr709_firmware_update.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_off0000e843.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE843 5460 bytes
SHA-256: ba1ff52ac7eda060e249343fee6fd30fcb57ff082816c0080abcbcc34f1196c9
font_01_sfnt_off0000fad4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFAD4 10472 bytes
SHA-256: 8a9515755b557f0a5a87f138b990eb224ca3ef6b8926265dce32807cd37e7f9d

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