Malicious PDF — malware analysis report

Static analysis result for SHA-256 ad96371799327bba…

MALICIOUS

PDF

79.7 KB Created: 2021-03-06 15:39:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-17
MD5: 14ce14919df26fff579356f1fdb42951 SHA-1: 1088ced5ccc0292d34e88e5360c705e170549dd7 SHA-256: ad96371799327bbae33c665ddb56e68bf9ac022525b5ef6c7fad7deee5b999f0
186 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 Pdf.Phishing.Trojan. The document contains a large number of external links, many hosted on disposable domains, suggesting a link farm used for phishing or malware distribution. While no scripts were explicitly extracted, the presence of numerous external URLs indicates an attempt to redirect the user to malicious content.

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://jottigo.ru/wix?keyword=owners+manual+ford PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4470678/normal_6033ee2d22ce2.pdfIn PDF document text
    • http://italiahot.space/714588069ggd9b.pdfIn PDF document text
    • https://cdn.sqhk.co/kejopala/HqNnJjj/best_free_photo_editor_program_for_windows_10.pdfIn PDF document text
    • https://ramexolilaburav.weebly.com/uploads/1/3/4/3/134331107/sipowo.pdfIn PDF document text
    • https://cdn.sqhk.co/piredonina/cBjavT1/lufuzenugawe.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387932/normal_5fc754bc35cbd.pdfIn PDF document text
    • https://cdn.sqhk.co/jarogofef/QiaOie9/cars_movie_soundtrack_download.pdfIn PDF document text
    • http://pagixuzipalopa.iblogger.org/434634887.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4425230/normal_5fde3e4da302c.pdfIn PDF document text
    • http://nigasheff.xyz/8184055036140wgm.pdfIn PDF document text
    • https://rogejizerabori.weebly.com/uploads/1/3/4/7/134763318/bozelibudubulol.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4367013/normal_60086606ad511.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
    • http://waxivetik.epizy.com/casu_marzu_formaggio_marcio.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/95eec308-eec8-478c-b3bc-c4dce652ce45/depobalivixodomejododavi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f749c5b6-011f-475a-b0b9-1e08c597c61d/41392905124.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1d465b57-c15a-4171-adbf-1be7f7745012/69544312268.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/12e98f20-92a2-4ec7-beb5-c852cdb7df83/calvinism_vs_arminianism_comparison_chart.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f4b2b2c0-0bf7-42d5-9f6b-6a2de6404e17/how_to_say_1_100_in_english.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_off0000effc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFFC 4924 bytes
SHA-256: bc7d403e7339b813de23474f87d3bd7676f0db342cad635b7c07732a50afb8cc
font_01_sfnt_off000100a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x100A6 10340 bytes
SHA-256: 982189ea6ce035b0671dbf520a054831017a46c4870b8c3918fa392a88b65df8
font_02_sfnt_off00012420.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12420 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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