Malicious PDF — malware analysis report

Static analysis result for SHA-256 6df0470516cd937c…

MALICIOUS

PDF

80.3 KB Created: 2021-03-05 19:15:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: 78a936f1a84334233dc9c249cf12a4f3 SHA-1: 6676f305f4c3803ac9984cc27ebac8954ff6c7c2 SHA-256: 6df0470516cd937c68002b03e79ce127a9a4dc76c18ce95477867febcec7e9ba
186 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics as a link farm, containing numerous external URLs pointing to other PDFs. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or distributing further malware. The embedded URLs suggest an attempt to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://seumenha.ru/aws?utm_term=macbeth+act+2+scene+3+lines+107-112 PDF link annotation
    • https://suretazusidik.weebly.com/uploads/1/3/4/0/134012564/5287766.pdfIn PDF document text
    • http://rabevazilogu.iblogger.org/p90x_program_schedule.pdfIn PDF document text
    • http://xoxuvajes.mywebcommunity.org/gapafofe.pdfIn PDF document text
    • https://cdn.sqhk.co/dalubevemex/eDhf8gh/funniest_sounds_to_do_on_tiktok.pdfIn PDF document text
    • https://lovarewido.weebly.com/uploads/1/3/4/3/134322716/degapora.pdfIn PDF document text
    • http://powajaxib.medianewsonline.com/how_to_use_the_clean_washer_cycle_on_my_kenmore_washer.pdfIn PDF document text
    • https://jukuzowak.weebly.com/uploads/1/3/1/3/131379830/9454958.pdfIn PDF document text
    • https://zekupepub.weebly.com/uploads/1/3/5/9/135992873/fa3ed07.pdfIn PDF document text
    • https://cdn.sqhk.co/gapekozuwa/PxhdKjh/driving_zone_germany_hack_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/bunigenozav/fNFiegg/double_masters_draft_primer.pdfIn PDF document text
    • http://tunezazetadu.22web.org/chaudhary_charan_singh_photo.pdfIn PDF document text
    • https://cdn.sqhk.co/kiledone/bNshfjc/my_new_baby_sister_card.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gijufemuvo.rf.gd/how_to_practice_sudarshan_kriya_yoga_breathing_technique.pdfIn PDF document text
    • https://s3.amazonaws.com/rimejiguvif/bisacodyl_mechanism_of_action.pdfIn PDF document text
    • https://s3.amazonaws.com/sojaxub/add_scatter_graph_in_google_sheets.pdfIn PDF document text
    • https://9042e326-c85f-44e6-b9b6-0c206471fdba.filesusr.com/ugd/0d2fda_021a317a3b9c40bbadbc4c8f09baa6f4.pdf?index=trueIn PDF document text
    • https://47ab6ce1-aee6-4086-a8e7-31fe393d2411.filesusr.com/ugd/afbef4_40d5ab66ae1b4c76923a933ce89080b6.pdf?index=trueIn PDF document text
    • http://faleferesevo.onlinewebshop.net/beowulf_full_movie_free_download_in_hindi.pdfIn PDF document text
    • http://kirotomi.epizy.com/stocks_that_always_beat_the_market.pdfIn PDF document text
    • http://tuguwobafadurot.rf.gd/bigiwujusogegovekatuxo.pdfIn PDF document text
    • https://9d1e48ad-bcd7-4831-9b7b-7108443a63b6.filesusr.com/ugd/136d07_6a77c147445a4704988903f9b2c321c5.pdf?index=trueIn PDF document text
    • https://4ef57e19-9a2e-4e6f-a444-f6b59f982a39.filesusr.com/ugd/4c1554_2e1ce7ee2ce84b1b8d5d1cd9be3aede5.pdf?index=trueIn PDF document text
    • https://551f0ad2-75d1-4009-b90b-2f3e3e20230b.filesusr.com/ugd/c2bf0a_7e8a6605f774403ba16c5c2d50a66fc1.pdf?index=trueIn PDF document text
    • http://sokekakeloji.onlinewebshop.net/how_to_put_plt_legend_in_pairing_mode.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_off0000fdea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFDEA 5540 bytes
SHA-256: dd6230704a002064ee1ff4133f662b22c438d57cf2ec3e7ab73c96455b0d71c8
font_01_sfnt_off000110d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x110D5 10324 bytes
SHA-256: cef037f9d59224fd34656b7de4d1d2476e1d058f3c61784c3b52799a9bacda5e