Malicious PDF — malware analysis report

Static analysis result for SHA-256 1bf2f5280f6201c3…

MALICIOUS

PDF

76.7 KB Created: 2021-03-21 10:28:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-20
MD5: 04a048b4939685e79e8757111bef9ab4 SHA-1: 3ed6fdf8d5275082e7d71e9fcf74d4a60f130e71 SHA-256: 1bf2f5280f6201c36ec6ac186692a734884408738dde7886ec11f23220560bd4
166 Risk Score

Malware Insights

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

This PDF document was flagged by ClamAV as Pdf.Phishing.Trojan and ML classifiers indicated a high probability of maliciousness. The document contains numerous links to external sites, many of which are hosted on disposable domains, and one heuristic specifically identified it as a link farm designed to obscure its true purpose. The 'SE_PASSWORD_ARCHIVE_LURE' heuristic suggests the document's intent is to trick users into downloading a password-protected archive, a common tactic to bypass security scans.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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://golowaki.ru/123?utm_term=breaking+bad+episode+guide+imdb PDF link annotation
    • http://clebohets.xyz/farming_simulator_14_mobile_guide0xfxp.pdfIn PDF document text
    • https://cdn.sqhk.co/valujoper/axicbJV/33675766576.pdfIn PDF document text
    • https://cdn.sqhk.co/jabisopomuxo/jjAp2a2/disney_cruise_line_december_2020.pdfIn PDF document text
    • http://gigazukiwizave.22web.org/serological_tests_in_microbiology.pdfIn PDF document text
    • https://cdn.sqhk.co/bivuwusim/fpiimvB/96312186271.pdfIn PDF document text
    • https://cdn.sqhk.co/wotirixa/Jyibhj3/66055631488.pdfIn PDF document text
    • http://leree4.club/book_of_enoch_kjvjpvvb.pdfIn PDF document text
    • http://vigastlens.xyz/589297643782pg7a.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://6e7ef639-f89a-4701-86f9-710a836f1183.filesusr.com/ugd/12745a_41717b78592740ef8796e8eefbf4d0ca.pdf?index=trueIn PDF document text
    • http://xizokokov.epizy.com/44074771351.pdfIn PDF document text
    • http://pimokizogo.epizy.com/sategifufabufafosovadi.pdfIn PDF document text
    • http://wilixafex.epizy.com/viliri.pdfIn PDF document text
    • http://puzekubaxi.epizy.com/alzheimer_trke.pdfIn PDF document text
    • https://e510c2d5-567e-4a96-89ff-abc18316baf7.filesusr.com/ugd/8a9bcc_3e3ecc16334443b5a0acbda690a35d30.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/fosagoba/63814429785.pdfIn PDF document text
    • https://s3.amazonaws.com/firudegix/amazing_love_chords_in_g.pdfIn PDF document text
    • https://ffb80149-315c-4936-8637-e87477b606fc.filesusr.com/ugd/e7410d_30d916e3a723468197f35cdd75ac17fa.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/nitizobuv/brandon_woelfel_skillshare.pdfIn PDF document text
    • http://vufagozujidivu.epizy.com/vegas_pro_15_tutorial.pdfIn PDF document text
    • https://fb413987-6e77-4bf1-aaa6-e97eb550fbee.filesusr.com/ugd/108936_d4c12570d6414e29825987291ca68dbe.pdf?index=trueIn PDF document text
    • https://676a7a22-5bec-432e-92e0-9d4a0a27851c.filesusr.com/ugd/a1fb72_3e488f1a5dc3424786335a6181279874.pdf?index=trueIn PDF document text
    • http://zagebixomibolo.rf.gd/change_gmail_account_password_on_android.pdfIn PDF document text
    • https://s3.amazonaws.com/fasudikek/advanced_manager_pro_apk_apkpure.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_off0000ebee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBEE 5500 bytes
SHA-256: d414037e3653eb837e1eb275860d6fa9b529cf1a472fcbc272b04fe6949ecd4e
font_01_sfnt_off0000fe8c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE8C 11208 bytes
SHA-256: 1436e954b8887ca2e0af450434d66cfaaf309278e413ce79fa5626ef5332841a

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