Malicious PDF — malware analysis report

Static analysis result for SHA-256 3f10ba07c6eacb68…

MALICIOUS

PDF

70.4 KB Created: 2021-02-21 03:38:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: c8d4ed532db22e60e4a692f8a89d6dd0 SHA-1: f14aacac3090f342289a54733087fe1e584f322c SHA-256: 3f10ba07c6eacb68530eee3b8c6a51d6492f71bfb781141374cbceed5fa7df10
214 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm and routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://yafferge.ru/wix?keyword=ghost+of+john+flipbook In PDF document text
    • https://cdn.sqhk.co/pomodizad/ISjfibo/91877452238.pdfIn PDF document text
    • http://ourfanz.com/h_s_c_marksheet_2019rtagw.pdfIn PDF document text
    • https://tixusevonatafix.weebly.com/uploads/1/3/4/6/134611731/mugoretebasaxo.pdfIn PDF document text
    • http://xotekalulomeb.iblogger.org/ranefodo.pdfIn PDF document text
    • http://smartcreditcheck.info/how_long_to_row_a_marathonq9f61.pdfIn PDF document text
    • http://13millions.store/microsoft_teams_login_loopl6pi7.pdfIn PDF document text
    • http://copyright-services-us.com/dawiriwafidosoxataayx9q.pdfIn PDF document text
    • https://cdn.sqhk.co/nujizeres/IjcGwjj/word_meaning_master_builder.pdfIn PDF document text
    • https://cdn.sqhk.co/baxotonad/j8Fchhi/viral_video_tik_tok.pdfIn PDF document text
    • https://netigobulon.weebly.com/uploads/1/3/4/0/134096742/vopiw-ganuvaga.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/wibedubosateg/bupekomevigizurakula.pdfIn PDF document text
    • https://s3.amazonaws.com/somamere/mobanosevodidazixederiv.pdfIn PDF document text
    • http://kisoperut.rf.gd/emotion_wheel_art_therapy.pdfIn PDF document text
    • https://s3.amazonaws.com/mexijegedakol/61158283854.pdfIn PDF document text
    • https://s3.amazonaws.com/falevi/xopugudoparadoruzubiza.pdfIn PDF document text
    • https://s3.amazonaws.com/tosevud/safik.pdfIn PDF document text
    • https://s3.amazonaws.com/gixirojozogufux/ofac_country_list.pdfIn PDF document text
    • https://s3.amazonaws.com/minegikukovel/ssc_2018_calendar.pdfIn PDF document text
    • https://s3.amazonaws.com/geraromu/adobe_acrobat_dc_trial.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b668.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB668 4664 bytes
SHA-256: ed48993de4731a88b29d737f32c5de3321472d410c7bb8984af261b92eb53244
font_01_sfnt_off0000c634.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC634 10048 bytes
SHA-256: 3d2a6ea3ebd4f10d9fd8a63b9e8cb5d4f5157baabef571f8d6896f4ea03b865e
font_02_sfnt_off0000e8d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8D0 16168 bytes
SHA-256: 0216150ac0e5ade23b072752459620ec704bdac01526bfbadd96d51f96873ef3
font_03_sfnt_off0000fdd7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFDD7 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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