Malicious PDF — malware analysis report

Static analysis result for SHA-256 7be8b33ef54c2d6e…

MALICIOUS

PDF

75.3 KB Created: 2021-04-15 05:56:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 7c15120db15a35088721101febaf613c SHA-1: 580946d30fb0366e31cda1c052396dc07f82b2c9 SHA-256: 7be8b33ef54c2d6e2bebac39f84fca77627b0e6a995cbb86ef3e8e3acac2b063
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 0.9996

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 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://fokemale.ru/strik?utm_term=boss+dd+200+vs+dd+500 PDF link annotation
    • http://bonboxstudio.com/860991532984csma.pdfIn PDF document text
    • http://shopsmmv.site/39810274322licn2.pdfIn PDF document text
    • http://creditreportus.info/what_types_of_phobias_existmvx88.pdfIn PDF document text
    • http://help-mediasupport.com/outline_template_for_a_research_paperdbqoo.pdfIn PDF document text
    • http://wifejopoxakobo.iblogger.org/mafigiposadufi.pdfIn PDF document text
    • http://christinaanddavid2019.com/what_is_first_and_second_order_reactionndijf.pdfIn PDF document text
    • http://com-connexion.xyz/52374110737gu4ns.pdfIn PDF document text
    • http://hotita.fun/chevron_corporation_annual_report_201121hm9.pdfIn PDF document text
    • http://granitmetrospecstroy.ru/agreeing_and_disagreeing_esl7cvoe.pdfIn PDF document text
    • http://hookup754.fun/27050456380c9m6k.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/rizoli/27724498507.pdfIn PDF document text
    • https://s3.amazonaws.com/zufaxepixiguxax/empire_last_season_episodes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/421a07b5-b701-4abd-88b2-986396f4e5cd/wadejozukosej.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/725924c4-8fa9-4fed-ab7f-860f147f7ef6/67795023229.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5b42f49e-e010-42dc-9b25-a155dcf8f51e/60214565069.pdfIn PDF document text
    • http://pulilidason.epizy.com/tecumseh_ohh60_gas_cap.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4a7f5cb7-6824-4b48-a58f-e0ec4180bffd/jeff_walker_launch_francais.pdfIn PDF document text
    • http://zijemuviwovo.rf.gd/badanamu_ponytail_song.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6f1200a3-beb4-43c7-b71f-b274aa0b7028/94658589065.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3c346c6d-afb1-4a08-ac13-88946bc67764/how_to_root_sm-t230nu.pdfIn PDF document text
    • http://robogotut.epizy.com/68957480067.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a8994f41-b84f-4df8-983c-2538b7a068c7/lakshmi_ashtakam_lyrics_in_tamil.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_off0000e988.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE988 4988 bytes
SHA-256: a7f4bc7fa5becb040584adab5d72c99c1ef4eceba8ab4d9bac3f6bdb265412ab
font_01_sfnt_off0000faab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFAAB 10948 bytes
SHA-256: f8f70d7e3da2daa11080da82e1fb52ec0049fcfaca4dbe8aa80fa4c479278580

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