Malicious PDF — malware analysis report

Static analysis result for SHA-256 d29fb71aea64320e…

MALICIOUS

PDF

76.9 KB Created: 2021-03-11 18:21:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 0b99b65e54fdd1513e355a8bbf31c9d4 SHA-1: 93cfde35f9033272a7c6a5f32b9034e74cfc8a68 SHA-256: d29fb71aea64320eab7816bfda60e7f7e7419c73e7995b89614e0431489a6876
126 Risk Score
Tags
free-cdn-ebook-manual-lure

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 0.9998

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://dafemum.ru/123?utm_term=fha+cash+out+refinance+guidelines+4000.+1 PDF link annotation
    • http://trendmobile.ru/5093082524g9hzk.pdfIn PDF document text
    • http://lorenbayi.com/workplace_incident_report_form_templatee8orc.pdfIn PDF document text
    • http://dagaxen.22web.org/is_shadow_dancer_on_netflix.pdfIn PDF document text
    • https://zakupiza.weebly.com/uploads/1/3/5/9/135960967/musoji-bajexirug-zobifabuwesuzu-fodogolobur.pdfIn PDF document text
    • http://jesubenodewopob.22web.org/xejivonabapevowobifo.pdfIn PDF document text
    • https://bitipobigexu.weebly.com/uploads/1/3/5/3/135399459/1a32b401ca39c.pdfIn PDF document text
    • http://xuridikak.22web.org/grammar_worksheets_advanced.pdfIn PDF document text
    • http://bosnoslovnoejelaniekupit.xyz/kung_fu_hustle_english_dub_free_streaming61jzy.pdfIn PDF document text
    • https://pibiwija.weebly.com/uploads/1/3/4/8/134896476/a4ba22b02e3901d.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://sutobilesu.rf.gd/61618707262.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/85d38100-790e-4e80-9245-d441f31c8e12/zufejadet.pdfIn PDF document text
    • https://s3.amazonaws.com/risisipajole/xuwozo.pdfIn PDF document text
    • https://s3.amazonaws.com/tipikaxe/moneketafodapazinapanok.pdfIn PDF document text
    • https://s3.amazonaws.com/figugipopar/jedujozunozonez.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/786f827f-9d52-4839-9581-24bf73273834/kitchenaid_mini_mixer_white.pdfIn PDF document text
    • http://wafubarig.epizy.com/73983306645.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ece49c14-e682-45c5-94b5-3225773abef2/how_to_remove_ratchet_straps.pdfIn PDF document text
    • http://muguvap.epizy.com/51512475278.pdfIn PDF document text
    • https://s3.amazonaws.com/satudifin/migunojajexosefejerafakan.pdfIn PDF document text
    • http://kavonuloruzofeb.rf.gd/sezuwixusuduvebiwulo.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_off0000edb4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDB4 5552 bytes
SHA-256: 3b2ad4d7cc13b7c3eb854dca8d83f3a40a6c9acfc6267921f3da8afe049731d6
font_01_sfnt_off0001009c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1009C 10928 bytes
SHA-256: 4de4dc05804acc0cd7f5c78745489b70fa3eb3f1afd5704ff430b283b6957831

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