Malicious PDF — malware analysis report

Static analysis result for SHA-256 c60ac5597bd13053…

MALICIOUS

PDF

73.0 KB Created: 2021-03-05 16:35:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: 299e4b2c694e4b819a824cc0074270d3 SHA-1: 54399d0f508f21e464e7b0f1fc2b097639ba2116 SHA-256: c60ac5597bd130537a3927bac07f2baaef4ae665eaac8e835d661400c8c8d382
186 Risk Score

Malware Insights

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

This PDF file was identified as malicious by multiple heuristics and an ML classifier, specifically flagged as a phishing trojan. It contains a large number of external links, many hosted on disposable domains, suggesting a link farm or redirection infrastructure. The primary URL found, https://midufefew.ru/aws, is likely used to direct users to malicious content or phishing pages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • 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://midufefew.ru/aws?utm_term=how+to+find+street+view+on+iphone+5 PDF link annotation
    • https://rikodobuged.weebly.com/uploads/1/3/1/6/131606346/6086851.pdfIn PDF document text
    • http://gijofabenetawix.66ghz.com/45404740224.pdfIn PDF document text
    • https://risimomumet.weebly.com/uploads/1/3/0/8/130814588/9738448.pdfIn PDF document text
    • http://towilevelogefok.22web.org/vuluboluruzopamewojuxug.pdfIn PDF document text
    • https://ronupajowosoza.weebly.com/uploads/1/3/4/8/134871490/468130.pdfIn PDF document text
    • http://dazomasuw.22web.org/gitexalizalekub.pdfIn PDF document text
    • https://doxekitonibi.weebly.com/uploads/1/3/5/3/135326555/luxavi.pdfIn PDF document text
    • https://wekubobezug.weebly.com/uploads/1/3/1/3/131383536/dikad-ribagefokut-wilepejazu.pdfIn PDF document text
    • https://tulalesin.weebly.com/uploads/1/3/4/8/134876190/4146631.pdfIn PDF document text
    • https://pepazosek.weebly.com/uploads/1/3/4/1/134108786/fafejisibefid.pdfIn PDF document text
    • https://fekugutupufug.weebly.com/uploads/1/3/4/8/134876907/9918070.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/jifedefujodu/dryer_sheets_coles.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e5a99343-c5ed-406e-894b-945d3a1ec9b3/how_to_fix_a_clogged_keurig.pdfIn PDF document text
    • http://pomezup.epizy.com/29164639314.pdfIn PDF document text
    • https://s3.amazonaws.com/rewepalazamiso/catlins_weather_report.pdfIn PDF document text
    • http://pepebejawu.epizy.com/tubelanobobevazamepazam.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9c563533-c8cf-42d7-a679-3b43adb4d9de/kivejozusabelesajizef.pdfIn PDF document text
    • https://s3.amazonaws.com/xefejevife/naruto_shippuden_android_game_apk.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_off0000e020.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE020 5124 bytes
SHA-256: 091df42f8f56078e9ee0ba9e6f69bdc0f91f4f9f73be2ef7b88def87a07d3314
font_01_sfnt_off0000f1ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1AC 11212 bytes
SHA-256: d2388a7bfa23aca15713feae85e816327d2a3dd9b8a5ce1d70ed3b8dbf97b5df

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