Malicious PDF — malware analysis report

Static analysis result for SHA-256 1f0eb8648e6281ba…

MALICIOUS

PDF

77.9 KB Created: 2021-06-08 10:03:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 34fd371d802006dd82322501767a55b7 SHA-1: add7d275a90edd870c58d874b1b11234f8877c9f SHA-256: 1f0eb8648e6281ba2f3fef730f3cb371a92dadacabe2916d802dcfe3bc895ae4
186 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains a large number of external links, many hosted on disposable domains, suggesting a link farm or SEO spam operation. The document body contains a seemingly innocuous string 'Chundari penne audio song' which likely serves as a lure to attract users to click on the embedded malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://botokaw.ru/123?utm_term=chundari+penne+audio+song PDF link annotation
    • https://tiketarutuluvo.weebly.com/uploads/1/3/4/0/134042831/wimabukejojimuzorula.pdfIn PDF document text
    • https://mebemawadaj.weebly.com/uploads/1/3/5/2/135295691/pizaxaninoz.pdfIn PDF document text
    • https://nokuzase.weebly.com/uploads/1/3/4/7/134765685/diponevat.pdfIn PDF document text
    • https://zegikawa.weebly.com/uploads/1/3/4/6/134640481/32b2bcaa5a93.pdfIn PDF document text
    • https://wiperorapaxomun.weebly.com/uploads/1/3/5/3/135323561/e14413e1fb869.pdfIn PDF document text
    • https://zukunade.weebly.com/uploads/1/3/0/9/130969607/kafimop.pdfIn PDF document text
    • https://tuxenovizomojow.weebly.com/uploads/1/3/7/5/137516496/a5ecad2fa158.pdfIn PDF document text
    • https://nakotugobal.weebly.com/uploads/1/3/5/3/135300729/9434257.pdfIn PDF document text
    • https://sinupumu.weebly.com/uploads/1/3/4/8/134893056/bebe2d.pdfIn PDF document text
    • https://gixapogaruxa.weebly.com/uploads/1/3/4/3/134331356/d315c.pdfIn PDF document text
    • https://ragitodis.weebly.com/uploads/1/3/4/7/134753297/damadetasokomot-xosak.pdfIn PDF document text
    • https://xijananok.weebly.com/uploads/1/3/0/7/130740199/fiwojefevij.pdfIn PDF document text
    • https://tirasuvemesamu.weebly.com/uploads/1/3/4/6/134672388/7982784.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://smc.org.in)MeeraRegularMeera2016SMC7.0.0+20171102HussainIn PDF document text
    • http://smc.org.inhttp://smc.org.inIn PDF document text
    • https://uploads.strikinglycdn.com/files/c7ddc06b-245e-437f-a195-04ae274d6558/xitepeloxarilox.pdfIn PDF document text
    • http://bazibenis.pbworks.com/f/pofasifibamupefolek.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d3843eb9-4aec-495f-a262-d4313dba7769/rexit.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c51a6da5-1997-4ba2-87d3-d091a30ff410/the_realtor_code_of_ethics_protects.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9f6d4eca-0bdf-4760-8e8d-8f7035250227/56967892386.pdfIn PDF document text
    • http://zokosixaged.pbworks.com/f/gta_vice_city_android_apk_download_revdl.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/490bf978-2e38-401a-a5b5-9e95bc603d79/mechanics_of_materials_beer_6th_edition_solutions_manual_slideshare.pdfIn PDF document text
    • http://kepojijudiva.pbworks.com/w/file/fetch/144679914/xanavererawuja.pdfIn PDF document text
    • http://damopijos.pbworks.com/f/canon_f_158_200_driver_win_10_64_bit.pdfIn PDF document text
    • http://rorazokazog.pbworks.com/w/file/fetch/144557325/descargar_musica_gratis_de_alejandro_fernandez_matalas.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
    • https://gitlab.com/smc/meera/blob/master/COPYINGIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e21b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE21B 5096 bytes
SHA-256: 30c8927b8263d7a6d44659fea90998a129becbe4b0dbdda152c6d28bafe62a61
font_01_sfnt_off0000f355.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF355 3668 bytes
SHA-256: 35fc21c033da74aa9c6aabeaae65a7c1ef8b772dcdd07238e966278f2e02028c
font_02_sfnt_off00010136.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10136 11968 bytes
SHA-256: e93b176545d9a48c243c816d611a9b2d49a27f09a77f079f390c3696840539ac

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