Malicious PDF — malware analysis report

Static analysis result for SHA-256 13a62a35377330af…

MALICIOUS

PDF

81.8 KB Created: 2021-05-15 02:05:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: f0e7a208af2228131e986c5fafbef0b0 SHA-1: fc68fef18e3c47ca585b45a2dea71a98bf6a9c1a SHA-256: 13a62a35377330af1122ff32f521d615a571e0feeebbe365a1abf82afe51cc77
126 Risk Score

Malware Insights

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

The PDF file contains numerous external URIs and is flagged as a link farm on disposable hosting, indicating a malicious intent to redirect users. The ML classifier and ClamAV detection strongly suggest this PDF is malicious, likely a phishing or malware distribution lure. Although no scripts were explicitly extracted, the PDF structure and embedded URLs point towards an attack pattern involving redirection to malicious content.

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://ponafet.ru/strik?utm_term=rhetorical+analysis+essay+example+advertisement PDF link annotation
    • http://copyrights-notices-helps.com/898392434338py3w.pdfIn PDF document text
    • https://cdn.sqhk.co/guranotup/cpHLhig/instant_drag_racing_apk.pdfIn PDF document text
    • http://nizuloxodiza.iblogger.org/bhojpuri_gana_video_hd_full.pdfIn PDF document text
    • https://cdn.sqhk.co/zojudaje/CN8uKgg/sorugoxaladipupifivox.pdfIn PDF document text
    • https://cdn.sqhk.co/dabekojov/jbThcSn/world_war_2_us_history_test.pdfIn PDF document text
    • https://cdn.sqhk.co/kivuwutu/bwhdefI/tizid.pdfIn PDF document text
    • https://cdn.sqhk.co/goberirud/hhyvGhb/vosuxoruterejulularola.pdfIn PDF document text
    • http://glossywp.online/vififesodexutaxamezidlu3sl.pdfIn PDF document text
    • http://cybety.xyz/hyderabad_chatal_band_remix_mp3_song_downloadduovy.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4482189/normal_5fe9f7c873e21.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372673/normal_601172a5a86f0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376120/normal_602755376a16c.pdfIn PDF document text
    • https://cdn.sqhk.co/riroxale/gdid2oe/zara_home_furniture_ireland.pdfIn PDF document text
    • https://cdn.sqhk.co/kakezesarop/6hI7tlu/pokemon_battle_simulator_online.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kepipejesa.epizy.com/katarojiforotejifedi.pdfIn PDF document text
    • http://wowijikozo.epizy.com/how_to_overcome_stress_in_students_life.pdfIn PDF document text
    • https://041aa876-b65b-432c-96c0-58c8b295a4e4.filesusr.com/ugd/90d19e_20e410a248fc4d39b149157d3f4aecdb.pdf?index=trueIn PDF document text
    • https://19eae752-0dc2-40b2-988a-3ead9c543f91.filesusr.com/ugd/dee0a8_e5e1b8f437e0405ba57b68dfa691a760.pdf?index=trueIn PDF document text
    • https://e432c3f7-acc0-403b-bc7f-1b8c16782643.filesusr.com/ugd/6a4899_13d84cc6b98c43b8ad8f0f90e3281921.pdf?index=trueIn PDF document text
    • http://ziguxivusijiz.epizy.com/54907886548.pdfIn PDF document text
    • http://gifimedirawi.epizy.com/48404809675.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_off0001019b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1019B 5552 bytes
SHA-256: c42429f5b23d68ab216af94f741c3f5bf497fa77eb4407e2ccec8fa8b32077fe
font_01_sfnt_off00011463.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11463 10992 bytes
SHA-256: 6bb7f02fdf9d06f8c2b99c47a8601601932280458ef4c2ee07604b0d0a507ac1

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