Malicious PDF — malware analysis report

Static analysis result for SHA-256 90e0811213302264…

MALICIOUS

PDF

76.5 KB Created: 2021-05-27 06:26:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: f7a5b78cd5ca48034ffb23fff7de4634 SHA-1: 22bfce80d745a42d28d044a1adfb9ed2ba0e00a8 SHA-256: 90e08112133022646d7bf22500e2545592e9df46bf0ad0c37a329b4ae48ba416
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 or trojan. It contains an embedded URL that redirects to a link farm, suggesting a phishing or malware distribution attempt. The document body, though heavily obfuscated, appears to be a search result for technical information, which is a common lure for phishing attacks.

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://lozipotod.ru/strik?utm_term=how+do+i+program+my+comcast+remote+to+my+panasonic+tv PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4464527/normal_5ff4a668e6080.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481673/normal_5fd24cff0568e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446633/normal_5fdc1bd85d8d8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4422144/normal_6044fe1ea3f82.pdfIn PDF document text
    • https://punotajevi.weebly.com/uploads/1/3/4/2/134266109/mifebuwegawalurox.pdfIn PDF document text
    • https://xofeboje.weebly.com/uploads/1/3/4/5/134584890/wisawejisevub_mimodu.pdfIn PDF document text
    • https://kenuvibugitevam.weebly.com/uploads/1/3/4/7/134700053/getizidu-zogafavif-petaku.pdfIn PDF document text
    • https://kumexaper.weebly.com/uploads/1/3/4/8/134882622/59c9712ff3828d6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4365552/normal_5fe487af7a8d4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4443809/normal_5fed80bcc7e86.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451762/normal_60406d649a324.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413005/normal_6055f5364335a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383149/normal_606e273a3e0a0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476272/normal_5fe4e2a6edc68.pdfIn PDF document text
    • https://posapana.weebly.com/uploads/1/3/1/4/131454172/492d02a9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4374976/normal_5ffc0c763e230.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://uploads.strikinglycdn.com/files/22911bde-dee6-43e1-8759-c3f2b594f0d8/calculate_mean_median_mode_standard_deviation_variance.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d95ffef9-fd61-4255-abd1-eb7462df9c6c/google_maps_with_satellite_view_for_android.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e204.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE204 5364 bytes
SHA-256: 24dd9ce790394e2e79c71b5fefd4b2c2d9b0063eb9586019daf486198acaaa51
font_01_sfnt_off0000f442.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF442 9792 bytes
SHA-256: 6636cbadb92f3982957d0aed2efcc42273e999501bf594ee8b76e124de487c6a
font_02_sfnt_off000115b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x115B7 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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