Malicious PDF — malware analysis report

Static analysis result for SHA-256 94710792883fa8ec…

MALICIOUS

PDF

83.7 KB Created: 2021-03-25 03:06:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: 1830e7645085652f3d0c40371cab8af3 SHA-1: 1accaf07f5b9ce99a46fd0402a8cdb927c36ffe0 SHA-256: 94710792883fa8ecce88401b0c69951a83a63157fca5622fc92c91f69d629964
126 Risk Score

Malware Insights

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

The file is a PDF containing numerous embedded URLs, many of which point to disposable domains and are flagged as link farms. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware delivery. Although no scripts were explicitly extracted, the PDF structure and embedded URIs suggest it's designed to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://mezovuduw.ru/award?keyword=apology+of+poetry+by+philip+sidney+pdf PDF link annotation
    • http://liseveziko.iblogger.org/what_are_the_3_types_of_mountain_building_processes.pdfIn PDF document text
    • http://xejepurefe.scienceontheweb.net/dadekuguw.pdfIn PDF document text
    • http://creamwalls.online/gufilejahvor6.pdfIn PDF document text
    • http://chelobaka.space/4227469257063aja.pdfIn PDF document text
    • http://busibear.com/macbeth_act_1_full_texttnj6w.pdfIn PDF document text
    • http://ch-bewertung-2888.xyz/form_19_pf_withdrawal_samplew2tnm.pdfIn PDF document text
    • http://basiditdcf.space/the_road_2009_full_movie_online_watchwpu2k.pdfIn PDF document text
    • http://love-cosmetics.shop/worx_landroid_review_ukkshvs.pdfIn PDF document text
    • http://pedron.fun/immense_synonym_formalu91ct.pdfIn PDF document text
    • http://menegatuje.iblogger.org/timesheet_calculator_military_time.pdfIn PDF document text
    • http://casbah2point0.com/tabiredefalastse4x.pdfIn PDF document text
    • http://wejuzofibab.medianewsonline.com/zavokebakakodepuko.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/7d1cf056-3d88-4961-9dc1-3b9960a353e5/jack_and_the_beanstalk_the_real_story_movie_online_greek_subs.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3e2a8fe8-0783-4d46-bf5f-4fef644d0052/jimekupinodumudazuti.pdfIn PDF document text
    • http://wirokafimuda.epizy.com/wastewater_treatment_processes_and_technologies.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f2977f12-8b49-4b28-b2e9-5ed288619425/sugezivenokexavomixog.pdfIn PDF document text
    • http://vegunag.rf.gd/56168804016.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cd6d33eb-dc8b-4033-8234-4198cb37f345/dibivawezep.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/450f4222-8aa6-4865-b4ef-0bdb50b15fb4/fewazu.pdfIn PDF document text
    • http://gusegata.epizy.com/what_is_the_best_basic_sewing_machine_for_a_beginner.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fc5f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC5F 5112 bytes
SHA-256: 927e337751c1aedf3dee8bd3aa3ba334a3e72e6beb5ccede1ba6f06ea387e6f6
font_01_sfnt_off00010dbd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10DBD 10876 bytes
SHA-256: 6ccb9c94d6ac98be92941dcf5c712af8f81be7f71347b55fe656c48806e05e76
font_02_sfnt_off00013302.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13302 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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