Malicious PDF — malware analysis report

Static analysis result for SHA-256 119ca5d45e693f14…

MALICIOUS

PDF

72.9 KB Created: 2021-05-13 00:43:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: c6d6b3482dde48b7f257238526120c83 SHA-1: e7095b79689a2606f520255d55d28b252893ad12 SHA-256: 119ca5d45e693f1450531cc722f357cf4ece07a49df31bfb3f48cd306c2f4b95
126 Risk Score

Malware Insights

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

The PDF contains numerous external links, many hosted on disposable domains, suggesting a link farm or phishing lure. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded URLs point towards an attempt to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9960

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://leonvi.ru/strik?utm_term=how+to+start+a+electronics+company PDF link annotation
    • https://votopugukoz.weebly.com/uploads/1/3/5/3/135315446/tifebog.pdfIn PDF document text
    • https://cdn.sqhk.co/zasokolof/v5DjjEN/silerurudaz.pdfIn PDF document text
    • http://sodowetan.mywebcommunity.org/significance_of_apomixis.pdfIn PDF document text
    • http://fasumaxupul.iblogger.org/file_ko_cho_in.pdfIn PDF document text
    • https://barobinamad.weebly.com/uploads/1/3/4/7/134756413/tevomos.pdfIn PDF document text
    • http://bimoriz.getenjoyment.net/14394543463.pdfIn PDF document text
    • http://kuxogajow.iblogger.org/54551411816.pdfIn PDF document text
    • http://xexapitanegis.getenjoyment.net/47992371324.pdfIn PDF document text
    • https://cdn.sqhk.co/luxixumogez/TMrfbif/hidden_objects_treasure_hunt_games.pdfIn PDF document text
    • https://cdn.sqhk.co/posuwumujome/epicjcZ/tebafagetixesokasa.pdfIn PDF document text
    • https://karesaxu.weebly.com/uploads/1/3/5/3/135392924/golalireduribo-lowojeruvus.pdfIn PDF document text
    • https://bomejafir.weebly.com/uploads/1/3/4/7/134725936/fegekijizepe_xiramanefube_mebumizurori.pdfIn PDF document text
    • https://cdn.sqhk.co/vatomepipiw/ie8W7cY/53223354431.pdfIn PDF document text
    • https://bijejumutitin.weebly.com/uploads/1/3/1/4/131454352/xurasolop.pdfIn PDF document text
    • http://sawemawe.mywebcommunity.org/bruce_lee_fighting_method_vol_1.pdfIn PDF document text
    • http://sosiwawivijomo.scienceontheweb.net/42904077896.pdfIn PDF document text
    • http://jerimujolegem.medianewsonline.com/29184682378.pdfIn PDF document text
    • http://vobarijijagurar.22web.org/supply_chain_management_sunil_chopra.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://rujavesejijoram.epizy.com/lawn_boy_320e_snowblower_carburetor.pdfIn PDF document text
    • http://tosipasakuvil.myartsonline.com/circle_of_life_2_part_choir.pdfIn PDF document text
    • http://xajalad.epizy.com/39999439115.pdfIn PDF document text
    • http://liwumulexajuvi.epizy.com/42121868150.pdfIn PDF document text
    • http://rexawisoza.epizy.com/couples_therapy_techniques.pdfIn PDF document text
    • http://baxovebiw.rf.gd/kaliamman_thalattu_songs.pdfIn PDF document text
    • http://xupewopomiboti.epizy.com/berenice_edgar_allan_poe_gratis.pdfIn PDF document text
    • http://givetupazowo.onlinewebshop.net/fudobikap.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_off0000de8b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE8B 5232 bytes
SHA-256: d04893f6c9c8a4220b21bf938a5dbd14f1f8496fbdf0858d9371b2f5a8de735e
font_01_sfnt_off0000f058.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF058 10800 bytes
SHA-256: a0366a34ba3512204e0c8d97d4d7695181e1e8ac3ce4fe2457d09dd394ea56a8

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