Malicious PDF — malware analysis report

Static analysis result for SHA-256 34f19a27304629f5…

MALICIOUS

PDF

73.7 KB Created: 2021-03-17 01:05:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 08dc824f00893c339fe709b657ed00a8 SHA-1: 89a5db9394a925cca42813ea50a0c465f82859a1 SHA-256: 34f19a27304629f5b958b385da7ef97aee3282f4ece34f31c5b43dc04da49e10
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

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. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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://lozipotod.ru/wix?keyword=escape+the+prison+walkthrough+fortnite PDF link annotation
    • http://milesnires.xyz/792165396621fli0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4485576/normal_5fef09f724b66.pdfIn PDF document text
    • http://affilateapp.online/novemunoratojeforatifaneg7ijf.pdfIn PDF document text
    • https://bomexufimewaw.weebly.com/uploads/1/3/4/5/134517434/nesuwowoxomizat.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4405440/normal_5fdf446cefe2a.pdfIn PDF document text
    • http://airet.space/how_to_write_caption_on_photo_iphoneebk6v.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366015/normal_600b131556396.pdfIn PDF document text
    • https://wilaruxade.weebly.com/uploads/1/3/4/8/134865150/rilulenosu.pdfIn PDF document text
    • http://hookup753.fun/vavorodinjxgl.pdfIn PDF document text
    • http://allieshouseofhope.com/22676512761aeosy.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4458625/normal_5fc7f7bb93b8a.pdfIn PDF document text
    • http://zukilobuzoroko.66ghz.com/vocabulary_worksheets_for_10th_grade.pdfIn PDF document text
    • https://nidedijuba.weebly.com/uploads/1/3/0/8/130814831/werasonokapof-beburo.pdfIn PDF document text
    • http://creditstar-kabinet.com/a._m._i_netflix_parents_guidet6zub.pdfIn PDF document text
    • http://prodson.space/bd_movie_sitevd3i4.pdfIn PDF document text
    • http://pornbustyvids.com/davran_bilimleriy58mk.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://rusuxagek.rf.gd/uniform_bounded_function_is_continuous.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b30768dc-be7b-4e1e-bebb-24528b0e174e/jewenozakevateforowob.pdfIn PDF document text
    • http://vezapuro.rf.gd/12628396553.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a20c10ac-d94f-479c-b23e-3b788e0ea7d1/nefisemebibudoti.pdfIn PDF document text
    • http://kixelekiteduxaz.rf.gd/similes_using_like_worksheets.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/096cefc1-838f-4dd1-89a8-f4ad50e755ca/why_is_apc_backup_battery_beeping.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c962.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC962 5388 bytes
SHA-256: 2edd7c23865840ec3e4c306282754047b25f4d953f7818596c1ca08ae46e1686
font_01_sfnt_off0000dbd4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBD4 10824 bytes
SHA-256: dcf1f5a4d195dc1b4d13cf45a5071558324734ae2a1323674a25509208e016b9
font_02_sfnt_off0001007e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1007E 16516 bytes
SHA-256: 247abf21b3b9dcf6a01e911a0fba16a2e5774648814f4b5fbc990ef28efded3d

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