Malicious PDF — malware analysis report

Static analysis result for SHA-256 7055799d05647281…

MALICIOUS

PDF

116.6 KB Created: 2021-03-11 06:07:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-20
MD5: 02cfad0e695320e73d1dbff9efc75cb7 SHA-1: 552cb16d95c30420acb6235d90fde1d02613e815 SHA-256: 7055799d056472815a38895ec3120dbcdabf4f3ad05abb5c52dd6d4c4e8cddaa
126 Risk Score

Malware Insights

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

The sample is a PDF file flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains multiple embedded URLs, with a primary suspicious URL pointing to 'lozipotod.ru'. The PDF's structure and embedded content suggest it's designed to trick users into visiting this external site, likely to download further malware or steal credentials.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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 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://lozipotod.ru/award?keyword=the+art+of+war+text+pdf PDF link annotation
    • http://cookwellbakewell.com/the_circulatory_system_worksheet_answers_bogglesworldeslth8pn.pdfIn PDF document text
    • http://jufanurozud.getenjoyment.net/ribaru.pdfIn PDF document text
    • http://tryraisins.club/throne_of_glass_download_ebookq0f11.pdfIn PDF document text
    • http://ygrash.website/dusavexifelosacwuy.pdfIn PDF document text
    • http://zijimesaxa.iblogger.org/de_quervain_s_exercise_sheet.pdfIn PDF document text
    • http://bcipreactivaperu.com/elder_sign_omens_expansions6umko.pdfIn PDF document text
    • http://taforojujutusig.mygamesonline.org/troy_bilt_lawn_mower_belt_replacement.pdfIn PDF document text
    • http://gejesixave.scienceontheweb.net/mercury_25_hp_2_stroke_outboard_weight.pdfIn PDF document text
    • http://topijakalez.22web.org/tagoj.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gasigigi.rf.gd/telephone_answering_service_costs.pdfIn PDF document text
    • https://493f174a-a540-412c-bacb-e5b7b26cbfcf.filesusr.com/ugd/95bb70_00d2334cfa7640b89f89e7075ef8f464.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/90eda8a2-7a1b-4047-b398-fba90d72f951/simcity_4_cheat_codes_not_working.pdfIn PDF document text
    • https://108bb973-5399-4bf7-a70e-a18780752cac.filesusr.com/ugd/760a88_9a76d8aebc1e4f81a89dde103acd742d.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/b05471ff-4595-4a0a-8308-81e24b0155b4/roomba_770_lithium_battery.pdfIn PDF document text
    • https://s3.amazonaws.com/sepawi/twilight_2_full_movie_in_hindi_download_480p_filmymeet.pdfIn PDF document text
    • http://fuzimobikuxuta.epizy.com/pajoxebekutujez.pdfIn PDF document text
    • https://s3.amazonaws.com/ragejufa/basal_cell_carcinoma_nccn_guidelines.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0c369c6e-0dad-48b4-8ad2-6117c4222a8c/tekonsha_prodigy_p2_trailer_brake_controller_troubleshooting.pdfIn PDF document text
    • https://s3.amazonaws.com/mesixadelomomo/91529824567.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_off0001913e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1913E 5028 bytes
SHA-256: d5eb238751e32249be5023df7fdea855cc6cc4613ba7bfd17d4b88495fed70b3
font_01_sfnt_off0001a26a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1A26A 10252 bytes
SHA-256: 7e7b9d74230129214cbf435ab47a35964a53ebb97063605d0be1773a7f96fa0d

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