Malicious PDF — malware analysis report

Static analysis result for SHA-256 bf54169d47301010…

MALICIOUS

PDF

102.5 KB Created: 2021-04-11 00:43:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: ce91844c3895c7dcc8063b0121dd032f SHA-1: df3894534d66b2672fb33f0e553beb7b35f9c7da SHA-256: bf54169d473010101126df426fb83d040fb914aef70b7c4da6c466998c378e15
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://botokaw.ru/strik?utm_term=what+is+the+meaning+of+full+time PDF link annotation
    • http://hyipinvest.site/informal_letter_example_addresshuo1i.pdfIn PDF document text
    • http://agencymedia-ig.com/gojamifodonokufulisoxix2t2m.pdfIn PDF document text
    • http://registrat.space/divergent_series_allegiant_-_part_2_full_movie_online_freerrexm.pdfIn PDF document text
    • http://de-bewertung-id2842384.icu/vixefvuum3.pdfIn PDF document text
    • http://vexetifiridik.mypressonline.com/lozigosowurege.pdfIn PDF document text
    • http://torchland.xyz/bileikler_ve_formlleri_8._snf77aeo.pdfIn PDF document text
    • http://prizinsta.online/vitapur_countertop_water_dispenser_manual771rm.pdfIn PDF document text
    • http://vsyahakasia.info/tidiritileze16wvi.pdfIn PDF document text
    • http://mebovedu.getenjoyment.net/social_issues_and_environment_assignment.pdfIn PDF document text
    • http://pocki.top/1009809776j82ls.pdfIn PDF document text
    • http://bobr.space/12754340445vg9yv.pdfIn PDF document text
    • http://tezuveripoxub.mypressonline.com/kafuvomuwomegemikuxebi.pdfIn PDF document text
    • http://clientbluebadge.com/what_is_mis_manager_job_descriptiond1geo.pdfIn PDF document text
    • http://keysecret.ru/how_to_make_percentages_into_decimals3zfo4.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://c8019651-2137-4367-b38e-775fff3f8a75.filesusr.com/ugd/fc5a02_a40745d0cc494423a89aecbe7a70d172.pdf?index=trueIn PDF document text
    • http://ruxopagotar.epizy.com/15261451712.pdfIn PDF document text
    • http://tososite.onlinewebshop.net/96427722600.pdfIn PDF document text
    • http://nozimazanu.epizy.com/how_to_pirate_adobe_photoshop_2020.pdfIn PDF document text
    • https://dcd55a6f-f4d9-4ab7-9ea0-0dac4ffa5d6f.filesusr.com/ugd/f7cbe4_a01a57fe7a1841538a490f56d43f1320.pdf?index=trueIn PDF document text
    • http://wudumiwetoveri.rf.gd/vujum.pdfIn PDF document text
    • http://padezaj.rf.gd/cow_feed_formulation.pdfIn PDF document text
    • http://raxegujanamefas.atwebpages.com/wajudaruxug.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00015103.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15103 5096 bytes
SHA-256: 4c447d6cf3ca1e13a9aa115f6c234dbe979b6539cb8b4e8713b4a039143c0a98
font_01_sfnt_off00016247.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16247 12256 bytes
SHA-256: c0260875eead33307ee44c0a7ff094dc4ceee9c7d25f93061cd4868124994af9

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