Malicious PDF — malware analysis report

Static analysis result for SHA-256 7c2e95a3512df1ad…

MALICIOUS

PDF

76.2 KB Created: 2021-03-24 17:37:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: 2647638c3e263840bcbe818653ca49c9 SHA-1: beb08f7a5ac0c2a3d5d3c718fe09e79bf5f89aae SHA-256: 7c2e95a3512df1ad08ac4c64152ff361be948a7bb14e41a7aa87a2a9c2004862
126 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including a machine learning model and ClamAV, as malicious and likely phishing-related. It contains numerous embedded URLs pointing to disposable domains and link farms, indicating an attempt to redirect users to malicious content. The document body, though heavily obfuscated, suggests a lure related to 'Tarot decks rider waite'. No scripts were extracted from this sample, but the overall structure and URL distribution strongly suggest a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://pelibifir.ru/aws?utm_term=tarot+decks+rider+waite PDF link annotation
    • http://alsamcctv.com/guzawolagawifiwizavowazwd67c.pdfIn PDF document text
    • http://puliliraforuwu.22web.org/72231292641.pdfIn PDF document text
    • http://crispyset.online/surfside_jetty_park_fishing_report8wiw6.pdfIn PDF document text
    • http://livethailand.fun/war_planet_apes_tamil_dubbed_movieh3tfd.pdfIn PDF document text
    • http://mugukix.mygamesonline.org/statistical_rethinking_a_bayesian.pdfIn PDF document text
    • http://bluebadge-support.com/6766601369644rh9.pdfIn PDF document text
    • https://cdn.sqhk.co/sakupiraf/Phfufih/senubegulujemaloredidonug.pdfIn PDF document text
    • http://japancar-sib.ru/a_t_f_full_formab4qm.pdfIn PDF document text
    • http://rafale.store/the_battle_plan_for_prayer_bible_studyzpcp1.pdfIn PDF document text
    • http://chistohome.moscow/vomarelitolepuxus5rfg.pdfIn PDF document text
    • http://kevilokosolug.iblogger.org/zunerapunumitawefaz.pdfIn PDF document text
    • http://majovevalaji.sportsontheweb.net/sinuro.pdfIn PDF document text
    • http://copyrighytsupport.com/culpa_tuya_mercedes_rond63va.pdfIn PDF document text
    • https://cdn.sqhk.co/wodaximewule/jbTNgdG/asteroid_november_2020_fox_news.pdfIn PDF document text
    • https://cdn.sqhk.co/wujakegu/o9ifgGm/tozuzosogajadetofoxu.pdfIn PDF document text
    • http://kanshoper.site/74054462427f53ek.pdfIn PDF document text
    • http://sowoxapexemex.sportsontheweb.net/70083211365.pdfIn PDF document text
    • http://899themes-demo.ru/60717981601ae3mr.pdfIn PDF document text
    • http://walkover.me/42533057449xib9d.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xodepew.epizy.com/95906687733.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_off0000ea37.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA37 5004 bytes
SHA-256: 987456ffc3d0e54ba24cb1e0365f1859cbf1ed52938b62c612a4b8327e178758
font_01_sfnt_off0000fb5e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB5E 12992 bytes
SHA-256: 2426be1f655706c0640d134f772cd76d407618e2dba70c67d6464167a8375cfb

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