Malicious PDF — malware analysis report

Static analysis result for SHA-256 502fccec2f0ba1ca…

MALICIOUS

PDF

74.8 KB Created: 2021-02-17 05:04:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: b8e28504f1e042e4d7a9d15b8cb73a42 SHA-1: a35f530f961530c38d8e5b8b775e06afd6664562 SHA-256: 502fccec2f0ba1ca47fbafc8bbd453a7dc6c84a0e981000f78c132f8dff2295c
184 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple embedded URLs that point to known malicious redirectors and disposable hosting domains, as indicated by the 'PDF_MALICIOUS_REDIRECTOR_LINK' and 'PDF_SEO_DISPOSABLE_LINK_FARM' heuristics. The ML classifier also strongly flagged this PDF as malicious. These findings suggest the primary purpose is to lure users to external sites, likely for phishing or further malware distribution.

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://yafferge.ru/strik?utm_term=sony+ps-lx300+turntable+review In PDF document text
    • http://artrosil.xyz/wonuza9z6xl.pdfIn PDF document text
    • https://ruvatekokero.weebly.com/uploads/1/3/1/4/131437102/4504234.pdfIn PDF document text
    • https://zopizegojuv.weebly.com/uploads/1/3/1/3/131380511/33797b7ceb6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383689/normal_5fd78a7139322.pdfIn PDF document text
    • http://vipmanmarket.space/54717629507jc6hp.pdfIn PDF document text
    • http://pixelbarista.com/loctite_243_safety_data_sheet8phxj.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408599/normal_60129d5f7da4d.pdfIn PDF document text
    • http://sberpodarok2020.online/setotolelifoxopafirazibotgia2n.pdfIn PDF document text
    • https://mojenosude.weebly.com/uploads/1/3/1/3/131382274/c7afd91ed.pdfIn PDF document text
    • https://sabiwivilo.weebly.com/uploads/1/3/4/3/134316676/3550083285368f0.pdfIn PDF document text
    • http://pijakonojimuw.iblogger.org/fortnite_battle_royale_game_size.pdfIn PDF document text
    • http://renijulemigato.iblogger.org/9414931884.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416321/normal_5ff24a7b361b8.pdfIn PDF document text
    • https://segalupozido.weebly.com/uploads/1/3/0/7/130738693/nevagexukogi-bekuda-wujapa.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4451949/normal_5fc7a839c9a1d.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/vukumesoj/app_cache_cleaner_android.pdfIn PDF document text
    • https://s3.amazonaws.com/nonipesikiri/senadevezazese.pdfIn PDF document text
    • http://migepelulu.epizy.com/celebrate_jesus_celebrate_sheet_music_free.pdfIn PDF document text
    • https://s3.amazonaws.com/dazinibonofobi/2017_chrysler_pacifica_hybrid_user_manual.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_off0000e750.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE750 5716 bytes
SHA-256: 1c5941236f350fb2ebc13f4b14b29ccd09c9bd6b34cc2bf6b6ce58ab40268df3
font_01_sfnt_off0000faec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFAEC 10168 bytes
SHA-256: 974ebe619aea9f4bfb94e5372eadf454a5198797bf85d92a6ae16f6d54828110

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