Malicious PDF — malware analysis report

Static analysis result for SHA-256 7194da33c0d0a8ed…

MALICIOUS

PDF

71.5 KB Created: 2021-02-02 05:31:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 448381e06b26d5a1d373fbab02df31bc SHA-1: 9d3091f3d2438cbfbc6ab1033c89ae0a6374ec21 SHA-256: 7194da33c0d0a8edf57f1b43e7fc84d5aca9c4b993f73f2d91d3b1af421b4f67
186 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, characteristic of a link farm, designed to obscure the ultimate destination of the user. Several heuristics indicate this is a phishing or malicious PDF, with ML and ClamAV flagging it as such. The presence of URLs like 'https://baarspo.ru/aws?utm_term=chrome+full+setup++for+windows+7' suggests a lure to download software, potentially leading to malware execution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://baarspo.ru/aws?utm_term=chrome+full+setup++for+windows+7 PDF link annotation
    • http://peregukejipesa.iblogger.org/asclepius_wellness_product_details.pdfIn PDF document text
    • https://cdn.sqhk.co/tasokuxu/cEMjhij/45403234176.pdfIn PDF document text
    • https://cdn.sqhk.co/romilononove/fTtRmOx/dowuxapilepebojiwuva.pdfIn PDF document text
    • http://wdd13.ru/rgb_led_radio_controldv1gq.pdfIn PDF document text
    • https://cdn.sqhk.co/vuritukupus/bicaih5/candy_fashion_dress_up_makeup_game_download.pdfIn PDF document text
    • http://btsworld.org/samsung_galaxy_s20_ultra_live_wallpaper_apklddef.pdfIn PDF document text
    • http://idealica-italiaufficiale.website/stickman_runner_gameo3bij.pdfIn PDF document text
    • http://lunurapezos.iblogger.org/planning_cours_cercle_de_la_forme_ornano.pdfIn PDF document text
    • https://rapofureduf.weebly.com/uploads/1/3/1/1/131164295/6659039.pdfIn PDF document text
    • https://cdn.sqhk.co/wudenedu/84ughhb/newenanofe.pdfIn PDF document text
    • http://muzhskoizhurnal.ru/fundamentals_of_thermodynamics_7th_edition_solution_manual_moranz02v4.pdfIn PDF document text
    • http://magic-spring.com/xufosijotasitoxalemose27ar2.pdfIn PDF document text
    • http://wowit.pro/pedagogy_neet_jee_net_banking_exam_preparation31b67.pdfIn PDF document text
    • http://plsale.pro/bypass_frp-_1._0._apk5xupq.pdfIn PDF document text
    • http://4gusevshop.space/instagram_followers_and_unfollowers_app_downloadbs26s.pdfIn PDF document text
    • http://potenciy.xyz/basketball_court_dimensions_in_square_meters6a0bq.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://ganubigeponato.rf.gd/2352453148.pdfIn PDF document text
    • http://fonobufusig.rf.gd/wokukebigaruze.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_off0000dc93.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC93 5148 bytes
SHA-256: 1fb4085777f60d6401a63f6c862f9dc0489c8a6f15dec61667899fa1ab4a48c6
font_01_sfnt_off0000ee05.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE05 10160 bytes
SHA-256: 2c0c07351b96c82af5d4b21a3a467ce53d9e5e7e775196887e5ebeb22909b848

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