Malicious PDF — malware analysis report

Static analysis result for SHA-256 34d20e7f7dd6fa55…

MALICIOUS

PDF

82.8 KB Created: 2021-03-20 07:56:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: a79dfae47fdc48dfa6de3e44fb5a2f3e SHA-1: 55942d493012399e7abaf1cfb26edc25d6b3b199 SHA-256: 34d20e7f7dd6fa5557f9656f42c955a24db11ab92c604576cf19b80aec157a44
126 Risk Score

Malware Insights

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

This PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous embedded URLs, with a notable concentration on disposable hosting, suggesting a link farm designed to redirect users to malicious sites. The document's content, though partially garbled, appears to mimic a price list, a common lure for phishing attacks.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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://lozipotod.ru/award?keyword=mahindra+tractor+spare+parts+price+list+pdf PDF link annotation
    • http://dosefokinuvulo.mypressonline.com/6701030877.pdfIn PDF document text
    • https://cdn.sqhk.co/pupevadojas/0ghiihg/bowmaster_mod_diamond_membership.pdfIn PDF document text
    • http://gumidaz.medianewsonline.com/52238005741.pdfIn PDF document text
    • http://jawixogu.mygamesonline.org/ejercicios_92_del_algebra_de_baldor_resueltos.pdfIn PDF document text
    • http://tubixiwuwura.iblogger.org/caracolitos_uniformes_centro_93.pdfIn PDF document text
    • http://miwodenexiz.iblogger.org/church_suggestion_form_template.pdfIn PDF document text
    • https://cdn.sqhk.co/rivitovolu/ighcjeh/zusalikiwo.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
    • http://zezofakarol.myartsonline.com/poxifisixapolugudixorip.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/954cdd5d-0993-4b9a-9e57-93b42e9ef46b/74306566762.pdfIn PDF document text
    • http://nowotaresumoti.epizy.com/xutujumusajukajusafawuvo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1bcb7439-b9cd-436e-9991-2d2fcb7695f3/introductory_econometrics_a_modern_approach_problem_solutions.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fde3d947-5b37-41ee-ae4d-6e7ee990fe39/are_all_gt500_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/pajeriramal/direct_and_indirect_speech_ks2_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/kujapomib/vufomolojegudivopik.pdfIn PDF document text
    • https://46fb9a51-9e16-4ad8-811e-2f7ed01702f7.filesusr.com/ugd/53363c_61d220a6123948ea840435f507e4d2b8.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/0a4a2b9b-11d5-4d5b-a8da-9027220b7a93/24269448416.pdfIn PDF document text
    • https://s3.amazonaws.com/najipavez/escape_room_answers_level_10.pdfIn PDF document text
    • https://0ca3454e-05ac-49fc-8d00-644b1af7be3c.filesusr.com/ugd/8bf3fc_5a5f6f2f33ae44739bb10f01ff10a437.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/e1321779-9f41-4dd4-a205-a5f330c76c34/how_to_install_a_semi_integrated_bosch_dishwasher.pdfIn PDF document text
    • https://d71fc03c-aea6-48f7-a990-8afffb22108d.filesusr.com/ugd/3de8a6_0528843ebcf140ad9dc7351204aadd86.pdf?index=trueIn PDF document text
    • https://f07eb630-23ff-4298-a1df-d7940f1ba2dc.filesusr.com/ugd/097a5b_81952de7a00649388345faa1cafeb8e7.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/vibasujefir/why_is_my_kenmore_fridge_water_not_working.pdfIn PDF document text
    • http://zifenefumob.rf.gd/39772379823.pdfIn PDF document text
    • http://pupagerirawax.myartsonline.com/can_you_flat_tow_a_dodge_durango_2018.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_off0000f8f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8F6 5036 bytes
SHA-256: 30d1e837cf1976d9aac55a9aa7bbc4b43ac7d263f6dedfebf58689738c48bdbe
font_01_sfnt_off00010a04.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A04 10844 bytes
SHA-256: b0862b84576a822c0fb114132ba905c502d343b508257e735ec7c6a704ac5783
font_02_sfnt_off00012ed7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12ED7 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34