Malicious PDF — malware analysis report

Static analysis result for SHA-256 9954b52bae6e04ca…

MALICIOUS

PDF

71.6 KB Created: 2021-02-23 10:42:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-07
MD5: 1acb0fbe4b6f0295a1b3967e62aae9fa SHA-1: 9f8ae19b8e19ed70fcc62a23dee112feeb134bdc SHA-256: 9954b52bae6e04ca7ecb67056b12cc2180d9284608fc8069ed005832b2b410a6
126 Risk Score

Malware Insights

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

The PDF file contains numerous embedded URLs, many of which point to disposable hosting and are associated with link farms. The ML classifier and ClamAV detection strongly indicate malicious intent, specifically phishing or malware delivery. The document body, though heavily obfuscated, contains references to 'Harry Potter and the sorcerer's stone picture book', suggesting a lure to entice users to click on the malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://jottigo.ru/strik?utm_term=harry+potter+and+the+sorcerer%2527s+stone+picture+book PDF link annotation
    • http://smeh-mif.space/breakup_party_hd_video_song_pagalworldcdd20.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480895/normal_60164d1ebf34e.pdfIn PDF document text
    • https://cdn.sqhk.co/nixibaraje/h7cwFXS/kexaradelibebefibipek.pdfIn PDF document text
    • https://sisuveraxom.weebly.com/uploads/1/3/2/7/132740665/rigunitibilik.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408001/normal_5fec7634b84a4.pdfIn PDF document text
    • https://cdn.sqhk.co/suvezadamut/hcihage/fowuligameresuviretinela.pdfIn PDF document text
    • https://wamonudikiso.weebly.com/uploads/1/3/0/7/130776885/tezelo_piwoniletiz.pdfIn PDF document text
    • https://gozezitigaja.weebly.com/uploads/1/3/4/3/134340412/xujarosam.pdfIn PDF document text
    • http://itdiscount.pro/mupetelefoxopimitib8sefd.pdfIn PDF document text
    • https://tiseworadew.weebly.com/uploads/1/3/5/3/135317060/19dd4b9e2c7d34e.pdfIn PDF document text
    • https://cdn.sqhk.co/buvaboda/djeYJjc/fedipoboburatalejedagimet.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387698/normal_60326c894d389.pdfIn PDF document text
    • https://cdn.sqhk.co/wavafinudow/bUWwLib/michael_myers_wallpaper_1920x1080.pdfIn PDF document text
    • http://iranianvc.com/65238288458br7bu.pdfIn PDF document text
    • http://argo-tourism.com/parts_of_speech_activities_for_high_school0xkkm.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://wubogijogazerew.epizy.com/popular_songs_to_learn_on_guitar_reddit.pdfIn PDF document text
    • http://bupubuvapefumi.epizy.com/lagu_blackpink_whistle_planetlagu.pdfIn PDF document text
    • http://dupikupujetilu.rf.gd/zonebigilojifepejope.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_off0000dae9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDAE9 5428 bytes
SHA-256: 5ba961d85b33340a4e485a39f59447d67879a304bb6dceac9d8cdade406ae830
font_01_sfnt_off0000ed62.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED62 10504 bytes
SHA-256: 383c90c589d4a6ec5d4a3e61a65bb96cd13b5af3fd5f5993d57d958b5cd09b94

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