Malicious PDF — malware analysis report

Static analysis result for SHA-256 2562a7463a904f66…

MALICIOUS

PDF

90.6 KB Created: 2021-05-01 08:03:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 239bf8217a1271d584510941babce45f SHA-1: ef282685ae3e86b52271965b7d94a475dd9f4bd1 SHA-256: 2562a7463a904f661c086d8e78e5bc6076c439de2cd441b38f5b947a25843dfd
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://xezojetit.ru/strik?utm_term=what+is+the+main+goal+of+technical+writing PDF link annotation
    • http://fexevewuli.mypressonline.com/pizirujidufuxoxi.pdfIn PDF document text
    • http://wirobigi.medianewsonline.com/social_media_marketing_benefits_for_business.pdfIn PDF document text
    • http://vuwiwetidajin.mywebcommunity.org/71259073638.pdfIn PDF document text
    • https://cdn.sqhk.co/dafisuwikib/gc0HuP8/spinal_tap_band.pdfIn PDF document text
    • http://delozofize.scienceontheweb.net/animals_coloring_book_free_download.pdfIn PDF document text
    • http://lnstagram-verifedbadge.com/fluid_catalytic_cracking_technology_and_operationsiyzmt.pdfIn PDF document text
    • http://segwaywheelchair.ru/functional_independence_measure_fim_espaolajra6.pdfIn PDF document text
    • http://tosety.xyz/customer_service_week_2015_crossword_puzzle_answers93vgk.pdfIn PDF document text
    • http://werenntaq.online/jamaica_images_clip_art_christmassylb8.pdfIn PDF document text
    • http://about-central.com/75313527200lulb7.pdfIn PDF document text
    • http://workmonster.net/lalararorogakejoxs68i2.pdfIn PDF document text
    • http://liwexun.mywebcommunity.org/nusenerawevedegosenokomif.pdfIn PDF document text
    • http://lnstagramservicecopyrights.com/weekend_at_bernies_cast_salarylvnsf.pdfIn PDF document text
    • https://cdn.sqhk.co/zefafulolit/i7i1jht/nhl_playoffs_2020_bracket_picture.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/b6240ffd-0f70-43d1-9bb5-fd6d228fe516/2005_honda_odyssey_oil_reset.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2b6e0978-6b5c-4024-9983-57d460a25c65/rusonow.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5f5d1c9f-bd4a-4ff5-8daf-de05f7688510/pedigudob.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f6f43f0b-0bd1-4dde-9e2b-24a3b164af64/nordictrack_1750_weight.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9cf3b0f7-98d7-4b5d-b7db-c28ec59cb1a3/craftsman_garage_opener_remote_program.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/90c9eccd-ed1f-4f7c-a6ea-36fb56c0b4ea/91264564531.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/05ce234d-4a8d-4ecf-8138-66ff72a4e9dc/what_is_a_fanatical_mystery_bundle.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ab4d2fbd-d311-4764-b139-e82ed6172854/9055737952.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b067c645-b3ac-4221-87de-c0ffc9b5bbb6/worujotitulifopawugonita.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_off000122bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x122BD 5400 bytes
SHA-256: 7fc65f6fb76094352de3390b85cd3820225f140c40fad21293161d359d4c2ba3
font_01_sfnt_off0001350e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1350E 11396 bytes
SHA-256: aad10edce5c0ef017ca1aa50f91fd0cd87b0c68bdee7a49cc8887481d2e01a2b

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