Malicious PDF — malware analysis report

Static analysis result for SHA-256 070552844ec40774…

MALICIOUS

PDF

98.0 KB Created: 2021-02-16 13:43:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: cf8e15e6a9388538188d6ba384218bf7 SHA-1: 11016ea6635de16e1962d106d8d7ba4990b5d847 SHA-256: 070552844ec407748381acb685b302bcd8c10d9a3515c1740b739be4c8e972f8
126 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. The document body contains a lure related to a TV issue, directing users to click on embedded links. Several URLs were extracted, many hosted on disposable domains, suggesting a phishing campaign or a distribution point for further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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://jottigo.ru/strik?utm_term=tv+makes+clicking+noise+but+won%2527t+turn+on PDF link annotation
    • https://cdn.sqhk.co/pobijejok/E35frhf/17374016360.pdfIn PDF document text
    • https://cdn.sqhk.co/firavibaw/yGZib3h/big_bad_ape_online.pdfIn PDF document text
    • http://discount50it.pro/art_history_volume_2_marilyn_stokstauerw2.pdfIn PDF document text
    • https://cdn.sqhk.co/devuzemalut/heOynjb/writing_hard_boiled_detective_fiction.pdfIn PDF document text
    • http://lovechat24.club/autocad_2013_full_tutorial820ww.pdfIn PDF document text
    • http://startbastar.online/kilasibikixiroretozaguitequ.pdfIn PDF document text
    • http://irisca.online/editor_template_kendo_grid_mvcb6lhw.pdfIn PDF document text
    • http://onatural.space/xazuzowelavatuga2xa20.pdfIn PDF document text
    • http://anrostore.ru/72448010502soy18.pdfIn PDF document text
    • http://volosaty100.xyz/cricket_bat_size_guideogs1d.pdfIn PDF document text
    • http://milanomoda-italy.site/cabbage_growing_information50luh.pdfIn PDF document text
    • http://dk-inc.xyz/inside_out_movie_summaryqsud2.pdfIn PDF document text
    • https://cdn.sqhk.co/lazujanaziri/ek3U6he/dog_simulator_3d.pdfIn PDF document text
    • http://smeshnoykir.space/android_4._3_google_play_services_apkkp65m.pdfIn PDF document text
    • http://mixit.info/6894629770955q8.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/vabemavuputenif/dark_background_hd_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_off00013ccb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13CCB 5460 bytes
SHA-256: 49e7ed2e961894a895706828208a27d87e006e0f635376763b9f79822eb9ea05
font_01_sfnt_off00014f66.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14F66 12148 bytes
SHA-256: a4255ea7f28d07215a33bbf234cd7c4c067acebe83694ae5c76b804cd79aa17a

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