Malicious PDF — malware analysis report

Static analysis result for SHA-256 d92ebb573e4b6d14…

MALICIOUS

PDF

88.6 KB Created: 2021-04-01 19:03:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 6a933c9c4e4fd934ed4d2264150305d4 SHA-1: dcd4ab491309b0e34c81cc5054f56edf18a82801 SHA-256: d92ebb573e4b6d14a0aef8619d23060ab76cdff054fab4833e777e35da1a5d65
126 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan payload. It contains numerous embedded URLs, with one prominent URL suggesting a lure related to 'Samsung galaxy s9 price best buy'. The PDF's structure and the presence of many links point towards a link farm or phishing attempt designed to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://resalured.ru/strik?utm_term=samsung+galaxy+s9+price+best+buy PDF link annotation
    • https://cdn.sqhk.co/kisesawaropo/VjaieZr/generations_the_legacy_july_2020_teasers.pdfIn PDF document text
    • http://yachts-4-sale.com/xoniruwogejevelumudopadwoho.pdfIn PDF document text
    • https://cdn.sqhk.co/terodekijur/zhhidhd/casa_superhero_run_arlington.pdfIn PDF document text
    • http://yandex-delivery.cc/basic_technical_mathematics_with_calculus_si_version_solutionsqtspx.pdfIn PDF document text
    • https://cdn.sqhk.co/poronujefino/eue45gd/fantasy_hockey_phil_kessel.pdfIn PDF document text
    • http://reduslim-europa.site/fifty_shades_of_gray_trailer_in_hindiuxvsi.pdfIn PDF document text
    • http://a-trvl.ru/55866426205en4a8.pdfIn PDF document text
    • https://cdn.sqhk.co/ragojagef/k4gSicE/sniper_warrior_shooting_games_sniper_shot_gameplay.pdfIn PDF document text
    • https://cdn.sqhk.co/momajuxu/OghMgf2/49826403672.pdfIn PDF document text
    • http://serawuv.mygamesonline.org/mowobolezarol.pdfIn PDF document text
    • https://cdn.sqhk.co/rijakobebux/aohcghG/tajirosa.pdfIn PDF document text
    • http://ragixanomus.iblogger.org/grouping_animals_worksheet_year_4.pdfIn PDF document text
    • http://kprovk.xyz/xatotelorojirijipedatizhn47o.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/liwafo/primeros_auxilios_basicos_presentacion_en_power_point.pdfIn PDF document text
    • http://wofiriperajune.epizy.com/pukolibusedagekekifo.pdfIn PDF document text
    • http://dopovis.myartsonline.com/77421820933.pdfIn PDF document text
    • http://fewabasutagit.rf.gd/kolelor.pdfIn PDF document text
    • https://s3.amazonaws.com/xeruxaxer/curso_de_ingles_larousse.pdfIn PDF document text
    • http://xizilagitakov.epizy.com/tefupoxijixopo.pdfIn PDF document text
    • http://paguxesij.myartsonline.com/9013992776.pdfIn PDF document text
    • http://dafukip.myartsonline.com/why_wont_my_antenna_pick_up_channels.pdfIn PDF document text
    • http://rowesatuminef.rf.gd/zorogorabezuxuribotopir.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_off0001191b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1191B 5824 bytes
SHA-256: 7fee036670287d6bb9ed7972c12486676ff798cbf642d4e2a262b2e77a66a974
font_01_sfnt_off00012cda.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12CDA 11380 bytes
SHA-256: 4b0b618566306f2306dcbdf424194c04f9ac6d38ad3b5fdbf798844fd60a52ef

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