Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ca2db18f15a6f67…

MALICIOUS

PDF

67.9 KB Created: 2021-02-18 19:51:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-20
MD5: 0083a6991fff63ef95734b1be0d3a885 SHA-1: 94a0e892761794f62b8bc6b98c6970ec8cd6e03b SHA-256: 2ca2db18f15a6f67823390625348e2eba7bddbab8ff0362718cdba162abbd29a
184 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution T1059.007 JavaScript

This PDF file was flagged by multiple heuristics and an ML classifier as malicious, specifically as a phishing trojan. It contains numerous embedded URLs pointing to link farms and disposable hosting, with at least one URL identified as a known malicious redirector. The primary function appears to be redirecting users to potentially harmful websites, likely for phishing or scam purposes.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://crophysi.ru/wix?keyword=intermediate+algebra+final+exam+answers In PDF document text
    • http://raisinshub.pro/save_website_as_chromeui2lf.pdfIn PDF document text
    • http://vk-settings-change.online/apple_tv_4k_buyers_guidefknm7.pdfIn PDF document text
    • https://gaxatibixowoki.weebly.com/uploads/1/3/1/4/131452935/5989623.pdfIn PDF document text
    • http://datab.vip/the_history_of_hindu_chemistry_book_kisne_likhibu5uk.pdfIn PDF document text
    • https://nadarikiwuxat.weebly.com/uploads/1/3/2/7/132712530/99d27f469d9f.pdfIn PDF document text
    • https://sunajojafexa.weebly.com/uploads/1/3/1/8/131856627/gabusuzowed_jovedu_jedoxuvaz.pdfIn PDF document text
    • http://musofiron.ru/2470182083gv2gu.pdfIn PDF document text
    • http://vkrowl.com/15437120245bup3o.pdfIn PDF document text
    • http://lamovingcompany.com/ninja_warrior_legend_of_adventure_games_mod2wr0v.pdfIn PDF document text
    • http://topcreditmonitoring.info/search_strategy_template0iaqq.pdfIn PDF document text
    • https://vazemewezasal.weebly.com/uploads/1/3/0/7/130775722/luzomawegigirure.pdfIn PDF document text
    • http://slmit.space/amaravati_kathalu_in_telugup718n.pdfIn PDF document text
    • http://agencymedia-ig.com/florida_constitutional_amendments_2018_guideo7v12.pdfIn PDF document text
    • http://app-3null.com/casio_protrek_wsd_f30_reviewgkpk5.pdfIn PDF document text
    • http://devgm.design/8880247235gtfg3.pdfIn PDF document text
    • http://mon-cmbretagne.best/29278410456yoadg.pdfIn PDF document text
    • http://thelandofbadideas.com/sipasu2plj9.pdfIn PDF document text
    • http://peuly.xyz/chakravarthy_2017_filmy4ryu.pdfIn PDF document text
    • https://dopijixofovaje.weebly.com/uploads/1/3/4/6/134692352/muzojajov.pdfIn PDF document text
    • http://probkin34.xyz/allahabad_high_court_ro_syllabus0ghb7.pdfIn PDF document text
    • http://storeplus.pro/memmedbagir_bagirzade_xatireler_mp3_yukleoo0h0.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000cdce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCDCE 5464 bytes
SHA-256: 1a078f24ced176e09693ad2f3d096029c90fbd1393f1bc7ec4b753e2fd4f71da
font_01_sfnt_off0000e05e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE05E 9996 bytes
SHA-256: ab9dd710995813e74bc678d2a1c8411f8d1d4898e876c8b97d8225981fd27c85

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