Malicious PDF — malware analysis report

Static analysis result for SHA-256 0eedca3bff0fad4a…

MALICIOUS

PDF

80.8 KB Created: 2021-03-14 03:29:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-25
MD5: 4042d69ee5ab45a85204c152cd97ae24 SHA-1: bb4275aef0aa0058296fb58ad979cc024f972456 SHA-256: 0eedca3bff0fad4a98933feaf65f09ca1e29c3467a5aa5c94250580795d98d58
126 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous embedded URLs, many pointing to disposable domains, suggesting a link farm designed to redirect users to malicious content. The presence of external URIs and the overall structure indicate an attempt to exploit users by directing them to potentially harmful websites.

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://bologen.ru/strik?utm_term=ultimate+comics+spider-man+2009+read+online PDF link annotation
    • http://scm03.ru/mma_fighting_clash_uptodown79gxv.pdfIn PDF document text
    • https://cdn.sqhk.co/jawubibegeba/M0jhgdg/31782605276.pdfIn PDF document text
    • https://davovexo.weebly.com/uploads/1/3/4/3/134355956/fofebaxowuwotovife.pdfIn PDF document text
    • https://cdn.sqhk.co/soxesemu/8mjeBA5/mepomol.pdfIn PDF document text
    • http://balegetiwep.mywebcommunity.org/89799479137.pdfIn PDF document text
    • http://persequenteamsohbet.com/nokuloiw47s.pdfIn PDF document text
    • http://siwosupegejolop.medianewsonline.com/commercial_real_estate_analysis_and_investments_geltner_download.pdfIn PDF document text
    • http://bibivire.mygamesonline.org/31577833529.pdfIn PDF document text
    • http://centerverifybadge.com/luxuwoxawonujb3nib.pdfIn PDF document text
    • https://tufelonidozuwux.weebly.com/uploads/1/3/2/6/132681512/xokawodab.pdfIn PDF document text
    • https://cdn.sqhk.co/gabunufu/qzjbkeD/running_horse_drawing_vector.pdfIn PDF document text
    • https://cdn.sqhk.co/pafatewodoju/gidbLjc/agent_orange_strain_cartridge.pdfIn PDF document text
    • https://xokefinodoju.weebly.com/uploads/1/3/5/3/135316617/64263.pdfIn PDF document text
    • http://gapagal.mywebcommunity.org/lomigevezuzo.pdfIn PDF document text
    • http://boxijogirexu.medianewsonline.com/how_do_you_fix_a_dryer_that_is_not_heating_up.pdfIn PDF document text
    • http://myfirstsite.xyz/debut_video_capture_full_version_crackehct0.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://jumepenitujox.atwebpages.com/phonetic_alphabet_military.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e50d64d8-eb21-4a0a-acab-181ea0ab379f/bowflex_xtreme_2_se_review_youtube.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/202bfbeb-4517-4d82-8c15-b02fab21a36e/htc_desire_510_hotspot_cricket.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/964d9cdb-938c-4830-bd56-a96b4db5cb14/48114521260.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/016de830-72d0-43c6-b652-8a5bc8def502/reading_comprehension_test_for_grade_3_philippines.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_off0000fb6d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB6D 5672 bytes
SHA-256: ca573e581593ca729c19d2fd637525236eb7b704a19cb70d394a404880183b47
font_01_sfnt_off00010e9a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10E9A 11524 bytes
SHA-256: 1874b94af76c3715418f657588b9aa0e85fa24071e0c875cadae287ec34b1ef7