Malicious PDF — malware analysis report

Static analysis result for SHA-256 ccb1501335e96411…

MALICIOUS

PDF

73.6 KB Created: 2021-02-19 00:50:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 4146bae65d1de7d83086595b10eb22ad SHA-1: 1b0c3d197f311625746967e595fd9bb2cb656438 SHA-256: ccb1501335e96411143725568fc55553ef742e32ec79962a78fe68312d873b04
166 Risk Score

Malware Insights

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

The PDF contains multiple suspicious links, including an invisible link to 'com-login8.xyz', indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. The document's structure and embedded URLs point towards it being part of a link farm designed to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Image-heavy PDF with invisible link to suspicious domain high PDF_SUSPICIOUS_LINK_LURE
    PDF is a small image-heavy lure with invisible link annotations that send the user to a suspicious high-risk-domain URI. This matches credential-phishing carriers where the visible document is only a prompt and the real collection flow happens on the linked website.
  • 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://jacksth.ru/wix?keyword=my+talking+tom+mod+apk+hack PDF link annotation
    • http://lafafojazepu.22web.org/feratoxokunumuveta.pdfIn PDF document text
    • http://generatorsale.ru/mijogecx8zs.pdfIn PDF document text
    • http://auto-fishing-rods1.club/bcycle_houston_promo_codeaxpiz.pdfIn PDF document text
    • https://cdn.sqhk.co/lilodipu/cGibGdh/megan_thee_stallion_ig_unlocked.pdfIn PDF document text
    • http://tegokujili.iblogger.org/lewulaxoxurirejaduvera.pdfIn PDF document text
    • https://cdn.sqhk.co/rivotoxupow/ia5JaJe/typoman_mobile_mod_apk.pdfIn PDF document text
    • http://fishing-rods2.club/formation_adulte_agent_immobilier_nantesle6gh.pdfIn PDF document text
    • https://cdn.sqhk.co/dafisuwikib/4cgfkvV/best_s20_ringtones_2020_for_android_10.pdfIn PDF document text
    • http://accueilcmb.com/ragnarok_eternal_acolyte_guidea8jcf.pdfIn PDF document text
    • http://freefire-gifts.com/facebook_video_chrome_android1vqnd.pdfIn PDF document text
    • https://cdn.sqhk.co/zoxowowi/dghgSFd/movetijemikosu.pdfIn PDF document text
    • https://cdn.sqhk.co/dedogupazib/wkhaQhi/refok.pdfIn PDF document text
    • https://cdn.sqhk.co/zabeluzitema/T3gfgzc/6012024758.pdfIn PDF document text
    • http://com-login8.xyz/urfi_marriage_contract_forms4z7z.pdfIn PDF document text
    • https://cdn.sqhk.co/wavafinudow/bUWwLib/michael_myers_wallpaper_1920x1080.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/gapuruxumeg/88313745896.pdfIn PDF document text
    • http://retipike.rf.gd/georgia_europe_tourism_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/tetenifeme/aguacate_origen.pdfIn PDF document text
    • http://waxewib.epizy.com/angry_emoji_hd_pic.pdfIn PDF document text
    • https://s3.amazonaws.com/guxosa/irradiated_blood_guidelines.pdfIn PDF document text
    • http://tutureluxusedak.epizy.com/23620420139.pdfIn PDF document text
    • https://s3.amazonaws.com/wonumafubij/hungry_shark_world_hack_apk_uptodown.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_off0000e302.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE302 5384 bytes
SHA-256: ef021a31356b7914888aaed9600cccdd9ae82cb547760bbcf5eb0b49892148fe
font_01_sfnt_off0000f54c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF54C 10448 bytes
SHA-256: 5475d3ac77441adadadd94dc31dc000b8621cfc293d92a9bb7df4119b347432f

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