Malicious PDF — malware analysis report

Static analysis result for SHA-256 00facf014997a8e8…

MALICIOUS

PDF

100.9 KB Created: 2021-03-18 09:45:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0c88beab9a527f0f0216dee242bbd5b4 SHA-1: be7276203a36a60a9b32ffb598593db04663993c SHA-256: 00facf014997a8e8d7d4f81921eac64f72bb6895a059bbceb277212434dcc8af
126 Risk Score

Malware Insights

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

The PDF document contains obfuscated text that includes a lure related to the cost of cortisone shots for dogs, directing users to a suspicious URL. The presence of multiple external URIs and a link farm heuristic indicates a phishing or malicious redirection attempt. ClamAV detection and ML classification further support its malicious nature.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9873

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://jumiwimov.ru/strik?utm_term=how+much+do+cortisone+shots+cost+for+dogs
    • http://giftcard-sale.store/4liker_latest_versionp5fhl.pdf
    • http://jologedeb.getenjoyment.net/bissell_proheat_2x_revolution_pet_pro_owners_manual.pdf
    • http://avtoshkola-region26.ru/55358165357x38hf.pdf
    • http://options.expert/92254691538q762v.pdf
    • https://cdn.sqhk.co/pisapaxosabo/Sjcijhj/67720797521.pdf
    • http://woodbonus.net/jukedubuwewnaaq.pdf
    • https://cdn.sqhk.co/letarezetap/CKsihKb/40504930244.pdf
    • http://velavedi.iblogger.org/913039352.pdf
    • https://cdn.sqhk.co/foxoxaze/Qhgk0jd/34881535029.pdf
    • https://cdn.sqhk.co/bexutavukaro/abybESz/lavutavusadenibudimupib.pdf
    • http://teragoronowaki.iblogger.org/gisasuruminobilefixuzexag.pdf
    • http://vkrowl.com/70945789611j7mty.pdf
    • https://cdn.sqhk.co/pitekofotada/jcgeCgd/33823781957.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • http://koxolavomuzo.myartsonline.com/powoba.pdf
    • https://58eafb2e-ea74-4523-a1b2-d2e0fe9bfe54.filesusr.com/ugd/466fa0_58dac187c5e04fcaafbb157bbba19fe4.pdf?index=true
    • https://uploads.strikinglycdn.com/files/c2bb5602-45ec-44b7-8871-c4ab9bbae915/alanna_the_first_adventure_summary.pdf
    • https://uploads.strikinglycdn.com/files/200cdf43-c52a-4294-9597-a827f488fc20/resumen_completo_de_la_divina_comedia.pdf
    • http://zojexajori.epizy.com/altoona_curve_schedule.pdf
    • https://uploads.strikinglycdn.com/files/a54aca7d-354e-450c-b4db-94ac6ce3047f/way_of_the_4_elements_revised.pdf
    • https://8b5ac0f3-2bc4-49a6-9a99-2541af31b215.filesusr.com/ugd/f2ef67_163909e0ac60444e991a2c8ae623b402.pdf?index=true
    • https://uploads.strikinglycdn.com/files/d5ae145a-86e2-418e-8a3c-222cb6d03188/mumapekizebikusupopufa.pdf
    • https://dc6b22d1-fd3c-476a-b8f1-b0505981f591.filesusr.com/ugd/ab5adf_db7f34130af24fc8b53845bcddd1b891.pdf?index=true
    • http://bivuraxut.rf.gd/conductivity_meter_calibration.pdf
    • https://uploads.strikinglycdn.com/files/94f9b68e-6557-4ee9-97f8-d8c6da51e454/situational_interview_questions_and_answers_for_management_positions.pdf
    • http://kafofatetijusow.epizy.com/mepesewejimeferiwut.pdf
    • https://7d6e376e-1ee3-4df5-88c1-8d1511d419f8.filesusr.com/ugd/7dd30d_79b4374bc7814f3a8281955fbe374c63.pdf?index=true
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000132e5.bin
40ce0bc9b113ef031639604f059b60aa9f1e41b097d60e75bfbf620cccc66306		 pdf-font-stream PDF embedded font (sfnt) at offset 0x132E5 2900 bytes
font_01_sfnt_off00013d29.bin
4d8381a9020fbdc3857b06422747f8618829e069e6da3e01e214071df65bfd1e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13D29 5128 bytes
font_02_sfnt_off00014e89.bin
93a49ab21c716b4613dcce00bbc391e89c2e235b8b5cfc45838f7e2a2d0c61a5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x14E89 11188 bytes
font_03_sfnt_off000174d5.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x174D5 4324 bytes

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