Malicious PDF — malware analysis report

Static analysis result for SHA-256 d7b8f6adf5b15f1e…

MALICIOUS

PDF

74.4 KB Created: 2021-03-27 20:04:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: bb5d373dba98596e0d375a2165a4e365 SHA-1: 5692f2da0e4f291de048db86bd0902aa451aa92d SHA-256: d7b8f6adf5b15f1e96f8f7c6b6cb2a61ba61f9bf1160d22743ab91ce25ef8826
126 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains numerous embedded URLs, many pointing to disposable domains, suggesting a phishing or malware distribution scheme. The presence of 'utm_term=windows+7+embedded+toolkit' in one URL indicates a lure to download or access potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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://resalured.ru/123?utm_term=windows+7+embedded+toolkit PDF link annotation
    • http://oneitshop.info/stealth_cam_g42ng_settingsoem75.pdfIn PDF document text
    • http://eagleaff.com/45668551199ut1rw.pdfIn PDF document text
    • http://vijepuwobewi.mygamesonline.org/new_york_metro_map.pdfIn PDF document text
    • http://zodatowafe.getenjoyment.net/motorola_g6_back_cover_replacement.pdfIn PDF document text
    • http://the-english-temple.com/958664283yo3gi.pdfIn PDF document text
    • http://rat-red.space/reading_phillies_playoff_schedule_20195p9yh.pdfIn PDF document text
    • http://beamorem.com/9215777843773g9.pdfIn PDF document text
    • http://vilopeg.xyz/casio_aw-80_replacement_strape6b1v.pdfIn PDF document text
    • http://mailedflkf.site/vegubifekuvojck70g.pdfIn PDF document text
    • http://endi-itali.space/madasopafoffupp4.pdfIn PDF document text
    • http://zegobudipaju.mywebcommunity.org/alopecia_cicatricial_central_centrifuga.pdfIn PDF document text
    • http://xejapuz.getenjoyment.net/84789627953.pdfIn PDF document text
    • http://wijutomotagam.mypressonline.com/karl_marx_francais.pdfIn PDF document text
    • http://zdorovienashevse.xyz/33923839483j3ddq.pdfIn PDF document text
    • http://tafuxasomup.getenjoyment.net/govosazululeworomebav.pdfIn PDF document text
    • http://lunagogafoxoj.sportsontheweb.net/74162765892.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/36c0d40b-568a-4d5d-8045-8baa3a4d0e52/81250861547.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/28aab8fe-47dd-4ffe-be68-56d0edda19f2/how_to_thread_bobbin_singer_featherweight.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/66567b6e-3e8b-45e2-98d8-e7e27932623c/kasasaruwaxebupa.pdfIn PDF document text
    • http://fuxunowelujuxa.atwebpages.com/78007207258.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b02b64d6-04d7-4d36-8444-f199ebe94a6c/lutabijuginimazuzugojelo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dba38112-94c9-4dbe-b98b-7ae02245ea20/taking_sides_clashing_views_in_special_education.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/371b5410-234d-44da-a5d6-94da6b9dbb56/armor_of_god_tattoo_ink_masters.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/de67087f-8181-48a7-a359-1d488fbc97fa/bose_cinemate_remote_control_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ce138a35-8d5b-43c5-8b13-3e420a78415b/magufuxoselodewon.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_off0000e680.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE680 5056 bytes
SHA-256: d24556a0f5823914263a1dd9e3a3509e58a8891f2658a93ddd3c1f4ba82d257c
font_01_sfnt_off0000f7bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7BF 10568 bytes
SHA-256: 04cfaf988693e2905cc3637fcc8b602ab79015a2dd7f809eeed00947c2e40cec

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