Malicious PDF — malware analysis report

Static analysis result for SHA-256 ba330d8db1750673…

MALICIOUS

PDF

76.8 KB Created: 2021-03-15 19:56:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: 6fcb9a4d4138914c2ab3547f96e8f1da SHA-1: c913f7221ec6b39c4b45e936eefc5bb7745fc20b SHA-256: ba330d8db175067372c422449fd3c3939a9e3d8b00175ba5f8dfe98e92606676
186 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, specifically as a phishing or SEO spam document. It contains a large number of external links, many hosted on disposable domains, and presents itself as a search result for a specific query. The embedded URLs suggest an attempt to redirect users to malicious or spam content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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 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/wix?keyword=golds+gym+class+schedule+bismarck+north+dakota PDF link annotation
    • https://lawagupavuraxap.weebly.com/uploads/1/3/4/6/134616311/bavixeto.pdfIn PDF document text
    • http://aydym.club/raizes_do_brasil_resumo_da_obrawp0rr.pdfIn PDF document text
    • http://vehicleinsusa.com/rametaduxajiwc55rh.pdfIn PDF document text
    • https://siwikuzovusodig.weebly.com/uploads/1/3/4/3/134357046/kabanimojiriji.pdfIn PDF document text
    • https://rebazizezasij.weebly.com/uploads/1/3/4/5/134586802/sodadasisirovu.pdfIn PDF document text
    • https://velumosatowe.weebly.com/uploads/1/3/4/8/134883763/xepitazolug.pdfIn PDF document text
    • https://taxajoberaruvu.weebly.com/uploads/1/3/4/3/134320235/6ed26c4.pdfIn PDF document text
    • https://vuxulirupam.weebly.com/uploads/1/3/5/3/135346280/gofebapivut_riral.pdfIn PDF document text
    • http://xofelivigavas.mywebcommunity.org/58639378376.pdfIn PDF document text
    • http://help-verifiedbadgecenter.com/exercice_corrig_sur_les_amplificateurs_oprationnel4ctyb.pdfIn PDF document text
    • http://nasufulorejuwe.mywebcommunity.org/bsf_questions_and_answers_lesson_11.pdfIn PDF document text
    • http://muziwavesos.iblogger.org/calcium_metabolism_in_dentistry.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://nifopufu.epizy.com/lipab.pdfIn PDF document text
    • http://nisebot.epizy.com/biblical_hebrew_grammar_visualized_review.pdfIn PDF document text
    • https://s3.amazonaws.com/pirosisob/how_to_measure_yourself_for_a_baseball_bat.pdfIn PDF document text
    • https://s3.amazonaws.com/gozilum/23526468202.pdfIn PDF document text
    • https://s3.amazonaws.com/dazifozixawus/nurifosufegibawipazip.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e00a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE00A 5572 bytes
SHA-256: ba78f5d1dc5182efa2d6674afab687c5b3a234d86c6b622a48e3525e2a6dca38
font_01_sfnt_off0000f2d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2D7 11120 bytes
SHA-256: 2cfd055bdfe8f5af377a6f073e98eb11f125422229d7baa70d00bbfad95d6570
font_02_sfnt_off000117e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x117E3 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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