Malicious PDF — malware analysis report

Static analysis result for SHA-256 6f002fd8ddeb8f50…

MALICIOUS

PDF

73.9 KB Created: 2021-03-18 13:52:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 036b26d338c356db5390682b40d91767 SHA-1: 707c3a80173b50237b8d2a2aeee63783b214e5cb SHA-256: 6f002fd8ddeb8f5010c1d0d02905baafff1e87dc9e4cb5bea16e031746e30c21
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

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-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://druttle.ru/strik?utm_term=the+ugly+truth+book+online PDF link annotation
    • https://kaxagigunuji.weebly.com/uploads/1/3/1/3/131383746/1a2306cdd.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4409627/normal_5fe3acfc60744.pdfIn PDF document text
    • https://nulenedo.weebly.com/uploads/1/3/6/0/136084055/sikewu.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4367297/normal_5fcdd04366d04.pdfIn PDF document text
    • http://ralanizu.iblogger.org/repavunireroxo.pdfIn PDF document text
    • https://kevofogag.weebly.com/uploads/1/3/5/9/135962027/rurazedejeri.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/xetasif/21124747226.pdfIn PDF document text
    • http://lobopekogolo.onlinewebshop.net/49979304115.pdfIn PDF document text
    • http://pejagezuwuki.epizy.com/65969184247.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0b3fa6b9-c821-4748-babc-e9b884dc80b5/que_significa_soar_embarazo_de_otra_persona.pdfIn PDF document text
    • https://s3.amazonaws.com/jodabiladezot/gotedokowuwivi.pdfIn PDF document text
    • http://wibitatazureb.rf.gd/electric_pressure_cooker_slow_cooker_recipes.pdfIn PDF document text
    • https://s3.amazonaws.com/nafamaragisek/72794304626.pdfIn PDF document text
    • http://bafopivazizaxon.rf.gd/pirovijekoneg.pdfIn PDF document text
    • http://nekelaxowe.atwebpages.com/85970306891.pdfIn PDF document text
    • http://xotopusedewix.myartsonline.com/wifojedaziru.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c29823e6-a889-4614-9567-e959dbbe6302/55421479876.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2d7f4032-3ee1-4dbc-b654-364001c3ed09/wezurifef.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cfb8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCFB8 4696 bytes
SHA-256: ea72e4c5643c9b3327b2c03259eec284877fbb365c3f703ecaeb4b723ff0bb79
font_01_sfnt_off0000dfb0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFB0 15832 bytes
SHA-256: f204f07089b40da914dbbdc0adecf54544fd94a209192cd61d84f6a54cbb7417
font_02_sfnt_off00010ad8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10AD8 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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