Malicious PDF — malware analysis report

Static analysis result for SHA-256 ddc5307bc1485cd8…

MALICIOUS

PDF

80.2 KB Created: 2021-03-06 10:17:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 0d91263b56029ed4d31750bddf52f875 SHA-1: f8b250b1ed90b28a863624bbd1c2e9a81934ed47 SHA-256: ddc5307bc1485cd81fa8afac8123fac1b4996deb2abd3444f47ce1431b5d4c37
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many pointing to disposable or suspicious domains, indicating a link farm designed to redirect users. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or malware distribution. While no scripts were explicitly extracted, the PDF structure and URL patterns are consistent with malicious document lures.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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
  • 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://gimoguvi.ru/award?keyword=troy+bilt+riding+mower+battery+voltage PDF link annotation
    • http://wusokamojifel.scienceontheweb.net/how_can_i_lower_my_dish_tv_bill.pdfIn PDF document text
    • https://cdn.sqhk.co/xuxinugad/wMwyhbL/pusosumukenawono.pdfIn PDF document text
    • http://bet-info.ru/sing_gary_barlow_lyrics_and_chordsgwhrb.pdfIn PDF document text
    • https://cdn.sqhk.co/dosakupu/PUtO7hi/san_manuel_slots.pdfIn PDF document text
    • https://rukegimamu.weebly.com/uploads/1/3/3/9/133986924/8674020.pdfIn PDF document text
    • https://cdn.sqhk.co/tiwopaperuv/jcriaBd/prison_escape_map_fortnite_creative_code.pdfIn PDF document text
    • https://voxudipuxun.weebly.com/uploads/1/3/5/3/135319737/tubigewutowuxo_rogitupele_zuvataf_donulov.pdfIn PDF document text
    • http://xupafujiga.22web.org/jitizonasa.pdfIn PDF document text
    • https://cdn.sqhk.co/depadukat/KJjfjif/canon_camera_connect_to_computer.pdfIn PDF document text
    • http://tendernes.ru/surfboard_sbg6580_all_lights_flashingpqxs0.pdfIn PDF document text
    • http://show-visitor.xyz/lean_canvas_definitionwe5lf.pdfIn PDF document text
    • http://baliferifopiz.mypressonline.com/personajes_de_el_libro_las_chicas_de_alambre.pdfIn PDF document text
    • https://nonikezit.weebly.com/uploads/1/3/4/3/134335915/vepus-juxijem.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/b277840c-ff7b-4b7a-8821-7bd23190ba79/nijuzofomukinalumazada.pdfIn PDF document text
    • http://xetorofowuwid.epizy.com/what_are_the_harry_potter_movies_in_sequence.pdfIn PDF document text
    • http://kinowazekuponaw.rf.gd/vusezajunaranalubogupu.pdfIn PDF document text
    • http://wuragumok.atwebpages.com/78834469811.pdfIn PDF document text
    • http://vinumokoz.epizy.com/lowrance_elite_4_hdi_prix.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/702a4b03-bdbf-43da-b681-6dc58650bee9/zebaxizebobu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9f1450bc-67dc-46da-aa2f-8ccce293ccf3/how_to_make_a_dress_shirt_fit_tighter_without_sewing.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/498b8f02-7eaa-4382-a7d9-482ccc6f6cff/what_is_lucian_freud_known_for.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_off0000fbab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFBAB 5312 bytes
SHA-256: 184b76d317ec51a7613633e1bf720a78b30ccb69b42bf42d5bfadb45c8bcecf1
font_01_sfnt_off00010dbe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10DBE 10956 bytes
SHA-256: f8d28a6a7c0d92cae33a21d13224bb8dca6cfe5782c3671e1972d154ff9c02d3

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