Malicious PDF — malware analysis report

Static analysis result for SHA-256 dac622bbb7c905e3…

MALICIOUS

PDF

73.5 KB Created: 2021-02-02 15:26:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: ad14ae5ec144991a0364a3d2c667965c SHA-1: 7231b345b44ecdfbd066a8e8b2cc1f61092db2f3 SHA-256: dac622bbb7c905e34e700ae6d9b083521aad4873e49cb5f6ef32b91122746b01
126 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as Pdf.Phishing.Trojan. The embedded URLs, such as https://jottigo.ru/123?utm_term=michael+jackson+dance+moves+stolen, suggest a phishing or malicious redirection attempt. The document body, though heavily obfuscated, contains references to search terms and application names, likely intended to disguise the malicious nature of the links.

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://jottigo.ru/123?utm_term=michael+jackson+dance+moves+stolen PDF link annotation
    • http://pewagupudasita.22web.org/mudizilorokuwumoxoj.pdfIn PDF document text
    • https://kuxelozipapim.weebly.com/uploads/1/3/1/8/131871637/9942002.pdfIn PDF document text
    • https://mulexiti.weebly.com/uploads/1/3/1/0/131070330/300743.pdfIn PDF document text
    • https://cdn.sqhk.co/dubutemaruxu/hSwg45o/connecticut_national_and_state_parks_in_colorado.pdfIn PDF document text
    • https://juzemadarerux.weebly.com/uploads/1/3/1/4/131437885/190ae776.pdfIn PDF document text
    • https://cdn.sqhk.co/zabeluzitema/5geihhc/las_vegas_tourism_news.pdfIn PDF document text
    • https://cdn.sqhk.co/wubunepan/TRXccii/ice_cream_drop_vector.pdfIn PDF document text
    • https://rerevuvoruta.weebly.com/uploads/1/3/2/6/132682210/sawelalifil.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://temomuduzuba.epizy.com/bixby_vision_apk_s7_edge.pdfIn PDF document text
    • http://webidiwotew.epizy.com/rebozezekaraluzo.pdfIn PDF document text
    • http://wasalesex.epizy.com/loan_interest_calculator_free.pdfIn PDF document text
    • http://xegewir.epizy.com/self_driving_car_using_raspberry_pi.pdfIn PDF document text
    • https://s3.amazonaws.com/rixevozajixezos/caging_skies.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_off0000e22e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE22E 5288 bytes
SHA-256: 9582afb3b0784efcb92947c6183a2d21d36788706a178933b0f1a1096bffd498
font_01_sfnt_off0000f41e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF41E 10964 bytes
SHA-256: 3cd41e3b02ecf9e2cf716ca4e24596926ac749fbb38bda803a0963fb7bb62e38

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