Malicious PDF — malware analysis report

Static analysis result for SHA-256 68806295446aa5cc…

MALICIOUS

PDF

85.2 KB Created: 2021-03-20 09:34:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: f5f6e67227c9dc32f045c51d7adbcd5b SHA-1: 537654d6297a1c88bf4365421ceecc3f7c8304b4 SHA-256: 68806295446aa5ccaf17c87b49de1c3fc6bcc37fdea8c7004dad053577db1953
126 Risk Score

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 0.9996

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://lozipotod.ru/strik?utm_term=short+stories+for+kids PDF link annotation
    • https://bisudika.weebly.com/uploads/1/3/4/3/134366448/laxamokaf-pabezuxipiw-vuwemad.pdfIn PDF document text
    • http://lassituda.online/289766284956b9nx.pdfIn PDF document text
    • https://zibekasosux.weebly.com/uploads/1/3/4/0/134040395/158184.pdfIn PDF document text
    • http://deromgroup.com/what_are_the_eight_steps_in_system_analysisol1al.pdfIn PDF document text
    • http://groshyk.site/nixilarumeysjn7.pdfIn PDF document text
    • http://uniques.space/dezarujedatezip394p.pdfIn PDF document text
    • http://habirovradik.ru/12032582153hx0lz.pdfIn PDF document text
    • http://fanutoragozogow.sportsontheweb.net/luwirowifamibulatasekun.pdfIn PDF document text
    • https://pipudanino.weebly.com/uploads/1/3/4/7/134708560/747abc5290f01d.pdfIn PDF document text
    • http://dfwshootersupply.com/titetuxizozivizaxo293f.pdfIn PDF document text
    • http://yachts-4-sale.com/lifesmart_hot_tub_flo_errorp9ncx.pdfIn PDF document text
    • https://pufopobumosuv.weebly.com/uploads/1/3/0/7/130776602/4b73df97a.pdfIn PDF document text
    • http://sanelobazigi.medianewsonline.com/les_sept_nouvelles_merveilles_du_monde.pdfIn PDF document text
    • http://italia-doc.space/bloc_quebecois_2019_election_platformvftjh.pdfIn PDF document text
    • http://lnstagramverificationbadge.com/functional_independence_measure_fim_deutschfwf2x.pdfIn PDF document text
    • http://bestrongbyg.com/abstract_wallpaper_hd_1080p_freefpf9j.pdfIn PDF document text
    • http://mibikazut.mypressonline.com/reading_actual_test_vol_5.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gozenabuzixi.onlinewebshop.net/50375186324.pdfIn PDF document text
    • https://s3.amazonaws.com/gozilum/grid_template_rows_css.pdfIn PDF document text
    • https://s3.amazonaws.com/gimufesajo/17767535290.pdfIn PDF document text
    • http://gupizamowakop.myartsonline.com/reading_comprehension_questions_and_answers.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_off000111e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x111E3 4920 bytes
SHA-256: 6bb0538dc9b4b260283be2a061659b6876875608175507f0dc8cc1fc49ba8301
font_01_sfnt_off0001229a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1229A 10796 bytes
SHA-256: e4950d60df42e7d9597d06bc77b77be21352ec477551e40942312cca8decd7b2

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