Malicious PDF — malware analysis report

Static analysis result for SHA-256 9009fd971321093f…

MALICIOUS

PDF

82.6 KB Created: 2021-02-15 08:11:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: b5e144095c632c0009bd1963913bdc6d SHA-1: 0e01187e47aa96f418df545549f0330944584552 SHA-256: 9009fd971321093f89461eed1aa9bf7a37255e8455510cd783e9e4ef4c65286e
184 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains multiple embedded links pointing to known malicious redirectors and disposable hosting, indicating a phishing or scam attempt. The ML classifier and ClamAV detection strongly suggest malicious intent, likely to redirect users to further malicious content or phishing pages. No scripts were extracted, but the presence of numerous suspicious URLs is a high-priority indicator.

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
  • 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 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.
  • 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/123?utm_term=search+advertising+exam+answers+2016 In PDF document text
    • https://mufixedak.weebly.com/uploads/1/3/4/6/134602267/nokodiv.pdfIn PDF document text
    • http://udilische.club/trasformare_centimetri_in_metriql6gv.pdfIn PDF document text
    • https://vafunaparixidi.weebly.com/uploads/1/3/4/6/134627598/2706861.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4455659/normal_600f44e58a34c.pdfIn PDF document text
    • http://perevod-card2card24.site/call_break_applicationg2gwt.pdfIn PDF document text
    • https://tipoxuxol.weebly.com/uploads/1/3/0/8/130814923/narusirix.pdfIn PDF document text
    • http://wiwuwanulujero.iblogger.org/care_1st_pharmacy_prior_authorization_form.pdfIn PDF document text
    • https://cdn.sqhk.co/tegiriwepaj/7m0Kxgh/kuxekotoxixugipegevi.pdfIn PDF document text
    • http://j3vnci4.xyz/normal_delivery_baby_video_freekf6pk.pdfIn PDF document text
    • http://salonvarna.com/all_you_wanted_piano_sheet_musicmeucy.pdfIn PDF document text
    • https://cdn.sqhk.co/budotedo/fiehghb/battle_bay_best_weapons.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://rezumasalimod.epizy.com/asphalt_8_pc_without_store.pdfIn PDF document text
    • http://werapitagu.rf.gd/average_speed_in_usa.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_off00010372.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10372 6124 bytes
SHA-256: 178340c32ea07537fedbefdd2f00848278a17cf8ab695516053be6177e6b35ab
font_01_sfnt_off0001183a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1183A 10992 bytes
SHA-256: 9fb49ddfb6a94f63cf48b808c7a53f8cd0955b77a94b43faaf78dee094e005bf

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