Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ad1285632264a3f…

MALICIOUS

PDF

90.2 KB Created: 2021-03-14 04:30:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-29
MD5: c207cc6312add5122e28b279d6bab0bd SHA-1: b363f922f8ad8d5cd6da6e0aed7b9456a46caaca SHA-256: 0ad1285632264a3f306a3765f054025e90d3406ab71751a829c0ccd7a3f42155
126 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous embedded URLs, many pointing to disposable hosting, suggesting a link farm or phishing lure. The document body is heavily obfuscated, but the presence of external URIs and the overall heuristic firings indicate an attempt to redirect users to potentially harmful websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://nipisod.ru/wix?keyword=advanced+sql+queries+for+practice+pdf PDF link annotation
    • https://cdn.sqhk.co/zarifabidit/ahhRhc4/9297873773.pdfIn PDF document text
    • http://forexgeeks.net/go_template_array_lengthbbltb.pdfIn PDF document text
    • https://cdn.sqhk.co/nujodusuwud/pnOgijj/75450252530.pdfIn PDF document text
    • https://cdn.sqhk.co/fofateze/gghETgi/migivavulo.pdfIn PDF document text
    • http://nubemeketetu.mypressonline.com/33101648343.pdfIn PDF document text
    • https://razasojesiwanet.weebly.com/uploads/1/3/4/3/134377469/butiwowapefi.pdfIn PDF document text
    • https://cdn.sqhk.co/norifasil/iagfCij/spiral_perm_or_regular_perm.pdfIn PDF document text
    • https://cdn.sqhk.co/gixekoji/jcgcie0/30355524417.pdfIn PDF document text
    • http://lnstagramverifiedbadge-media.com/polis9x9sx.pdfIn PDF document text
    • http://xemokajoled.medianewsonline.com/37478984581.pdfIn PDF document text
    • http://zuvels.xyz/how_to_find_how_many_atoms_of_an_element_are_in_a_compoundrpct8.pdfIn PDF document text
    • https://cdn.sqhk.co/butuxolevu/ijigyBv/39477737874.pdfIn PDF document text
    • https://nisofopirumo.weebly.com/uploads/1/3/4/4/134478351/bcbf430a.pdfIn PDF document text
    • http://nizavevorupuj.mywebcommunity.org/cuantos_cm_hay_en_un_metro_cubico.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/3a5d4603-742c-472b-8004-de6e88c9dcf6/what_lucrative_business_can_i_start_with_100k_in_nigeria.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/10162b4b-e175-43fb-8da6-f194ace77e04/panefigagidudegofutore.pdfIn PDF document text
    • http://ziwemasux.myartsonline.com/twilight_movie_download_free.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_off0001213e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1213E 5324 bytes
SHA-256: 2bcbf4f6f1855f6ac31c4f19a4156052b08a634b8140d7e05019a9adaf42b9fd
font_01_sfnt_off0001336e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1336E 11760 bytes
SHA-256: 5b2db1d0d3d24b21c8082b034031bddda44a44880b6c07ae4db24f3cc45a1e9b

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