Malicious PDF — malware analysis report

Static analysis result for SHA-256 602db788975e028a…

MALICIOUS

PDF

75.6 KB Created: 2021-03-16 21:13:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: ae76582b51daf8dbc40a4a1ecedde4c2 SHA-1: 8baa2178eb3d0d56bfda5bce894e2fcd18861565 SHA-256: 602db788975e028a6f548bc1273b43dcf5278ddab2379b727c6a4d50be2b0669
134 Risk Score

Malware Insights

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

The PDF contains multiple heuristics indicating it is a link farm and a potential phishing lure, with a high ML classifier score and ClamAV detection confirming maliciousness. The embedded URL 'https://pelibifir.ru/wix?keyword=unblocked+games+by+dylan+2+minecraft+1.5' strongly suggests a social engineering tactic to trick users into visiting a malicious site. No scripts were extracted, but the PDF structure and URL reputation point towards a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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/wix?keyword=unblocked+games+by+dylan+2+minecraft+1.5 PDF link annotation
    • http://xagidodovinudu.iblogger.org/my_whirlpool_duet_washer_will_not_drain_or_spin.pdfIn PDF document text
    • http://begdas.fun/resnick_and_halliday_physics_solutionsub9zr.pdfIn PDF document text
    • http://ighelperscenter.com/83041950632tavtu.pdfIn PDF document text
    • http://vadukut.iblogger.org/ragnarok_m_eternal_love_cooking_leveling_guide.pdfIn PDF document text
    • http://my-favshopc.online/gewipqihbg.pdfIn PDF document text
    • http://fruit-italy.space/zozusuwolinekanega7v7mz.pdfIn PDF document text
    • http://xusugiponag.22web.org/jalasiresomosuxozilebute.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://rabuxevemut.rf.gd/how_many_calories_in_a_medium_sonic_slush.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0a9e986d-cd15-47ca-8010-cea27285dc98/bemav.pdfIn PDF document text
    • http://dulubuli.rf.gd/joniwiwagaligosukip.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/01f02b8a-1927-42de-9fe9-19ae5e8ce7d8/bepeludawewabibiva.pdfIn PDF document text
    • http://bonizeza.epizy.com/chargers_uniform_schedule_2019.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dc810760-b6b0-4cc3-885a-52c4fba85514/durowogukedetutedapoju.pdfIn PDF document text
    • https://s3.amazonaws.com/lixisariwulo/70353069347.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a14f06d3-76bc-4010-8ea0-668d1b807671/48489300736.pdfIn PDF document text
    • https://s3.amazonaws.com/ropidadegaxut/sosilimilovawovafuzep.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f3ca4362-b389-4c0a-a19d-7ad38ae2d702/great_writing_2_5th_edition.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f6f57b9a-2f21-4941-875e-815c6fd4ee7d/ask_and_it_is_given_free_download_full.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3b1eb992-e85d-43bc-9613-3267798fb33b/vudisebakidawuxe.pdfIn PDF document text
    • http://fazetotunoju.epizy.com/kirijozo.pdfIn PDF document text
    • http://foripoj.epizy.com/labijajima.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/853b8aeb-4ab3-4b6a-81dd-aee95fc54295/how_does_the_court_system_work.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/944febcf-a5b9-4303-8dab-230f12a7519f/how_to_become_medical_malpractice_lawyer.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_off0000e8fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8FC 5980 bytes
SHA-256: e8b680c12a6447e3484091224de1538af5ae93093d060703cee314f0b711aa91
font_01_sfnt_off0000fd5b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD5B 10528 bytes
SHA-256: 375b43211f13009bcb1e18bb047ff68d671dfbc634dab20fd23917ee6de00842