Malicious PDF — malware analysis report

Static analysis result for SHA-256 ab8896c4ed83a613…

MALICIOUS

PDF

83.0 KB Created: 2021-03-23 11:51:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-10
MD5: e356805dfec598c398144eb6c673bf74 SHA-1: 8524ee12b9e05a9509e3eaf230e2083b091ccbe0 SHA-256: ab8896c4ed83a613456f64960be4c24b420ea31e367d69f7cec481730fe1a704
126 Risk Score

Malware Insights

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

The sample is identified as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The PDF contains numerous embedded URLs, with at least one, 'https://lozipotod.ru/strik?utm_term=gold%2527s+gym+xrs+20+squat+rack+review', appearing to be part of a phishing or malware distribution scheme. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' further suggests a malicious purpose, as it indicates the PDF is a link farm hosted on disposable domains.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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/strik?utm_term=gold%2527s+gym+xrs+20+squat+rack+review PDF link annotation
    • http://sale20.site/algebra_2_unit_5_polynomial_functions_answers5z2tc.pdfIn PDF document text
    • http://tryadasert.online/667926542766lwld.pdfIn PDF document text
    • http://obzorov.site/pals_nine_theories_of_religionwmwg8.pdfIn PDF document text
    • http://makululi.iblogger.org/henry_morris_study_bible_ebook.pdfIn PDF document text
    • https://cdn.sqhk.co/fugovigul/xZhb2L9/environmental_incident_report_format.pdfIn PDF document text
    • https://rukupapafi.weebly.com/uploads/1/3/0/7/130739745/zamurazo.pdfIn PDF document text
    • http://nubolats.xyz/xosakefururakyjs72.pdfIn PDF document text
    • https://bidefajiwi.weebly.com/uploads/1/3/4/0/134096082/dfa1c11280cd54.pdfIn PDF document text
    • https://doliwejivus.weebly.com/uploads/1/3/4/3/134353379/2563146.pdfIn PDF document text
    • https://cdn.sqhk.co/dufukeraj/cWheZji/82416619087.pdfIn PDF document text
    • http://dronextactical.xyz/gepezogepofigiweni7hgra.pdfIn PDF document text
    • https://kepijiloxa.weebly.com/uploads/1/3/4/1/134108658/buvodum_voxogot_filamujigiwijad_kegasoxiwofo.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kejoweb.epizy.com/catholic_liturgical_vestments.pdfIn PDF document text
    • http://fugiwebagatikog.rf.gd/cahills_vs_vespers_book_4_free_download.pdfIn PDF document text
    • https://a40b6db0-1679-4e03-879f-ac5827b9aa7d.filesusr.com/ugd/dba42a_efdfe6895f404adbb1b15d6dbaea96a0.pdf?index=trueIn PDF document text
    • http://minofadejewezup.rf.gd/cartoon_pictures_coloring_sheets.pdfIn PDF document text
    • http://fefawitot.rf.gd/12025280991.pdfIn PDF document text
    • https://f803bf1b-e1c2-47f6-a41f-c9785c88fbd4.filesusr.com/ugd/bf07b1_eacc787da34c496d98b56849f704f360.pdf?index=trueIn PDF document text
    • https://dcc20dec-0195-4543-b617-cfb82efd15f0.filesusr.com/ugd/30ea26_d11e90d19eca4505b1a0b7186bf4210f.pdf?index=trueIn PDF document text
    • http://kutegabirena.epizy.com/android_vs_ios_market_share_worldwide.pdfIn PDF document text
    • http://mujeburesi.epizy.com/75513277978.pdfIn PDF document text
    • http://kijikerid.epizy.com/67580009966.pdfIn PDF document text
    • https://c3373aeb-ed74-4f2d-b631-fa679e0a3f6f.filesusr.com/ugd/cbe7f7_e16d5c5d179849929dfda2b38d0545c9.pdf?index=trueIn 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_off00010454.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10454 6108 bytes
SHA-256: 1437dfa4b662570b567fd92079d61d81971dc7452ed0d0d3b4e55475c503fbef
font_01_sfnt_off00011927.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11927 10992 bytes
SHA-256: 0f5e798060a31c0070ed9a29315774cbf0b42e373a679ef646339231ec0c2d8f

Open this report in the interactive analyzer, or submit your own file for analysis.