Malicious PDF — malware analysis report

Static analysis result for SHA-256 589d8d02d09aa8cb…

MALICIOUS

PDF

73.4 KB Created: 2021-02-20 05:47:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: e7ee41a257d608f9b5c2a163f1e1e955 SHA-1: bb1d0195f2168b068a6295d54b1f7425488fd149 SHA-256: 589d8d02d09aa8cbf89a94b52e905b2a206a7a41ee031f4b1a2bf793099d1068
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains numerous external links, a common tactic for link farms and phishing. The ClamAV detection and ML classifier strongly indicate malicious intent, specifically identified as a phishing trojan. The embedded URLs, such as maypoin.ru, likely serve as landing pages for malicious content or further exploitation.

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
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://maypoin.ru/strik?utm_term=jack+lalanne+power+juicer+express+manual PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4496204/normal_5fc80c553a8d3.pdfIn PDF document text
    • https://lapedifulijep.weebly.com/uploads/1/3/0/7/130739603/dodikeg.pdfIn PDF document text
    • http://widevuvi.22web.org/gst_invoice_template_word_format.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366027/normal_5ff5362782955.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450870/normal_5fefbb39afe82.pdfIn PDF document text
    • https://cdn.sqhk.co/jogepirar/ibiaDTX/poretivedabelazulogi.pdfIn PDF document text
    • https://ravemazezaj.weebly.com/uploads/1/3/4/8/134885195/baxakixoteno.pdfIn PDF document text
    • http://save50it.pro/ryzen_build_guide_2019ayhs0.pdfIn PDF document text
    • http://tarusexozof.iblogger.org/ampicillin_mechanism_of_action.pdfIn PDF document text
    • https://cdn.sqhk.co/sunalikefazo/eRjgMmn/pogemozadexikodozopif.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4406455/normal_5ff493837aa36.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
    • http://kelutezawixe.epizy.com/the_art_of_seeing_a_creative_approach_to_photography.pdfIn PDF document text
    • http://lanotiwigizoxep.epizy.com/oxidation_numbers_and_redox_reactions_worksheet.pdfIn PDF document text
    • http://xisapedugifado.epizy.com/gravity_falls_journal_3_special_edition_all_black_light_pages.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_off0000d022.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD022 5168 bytes
SHA-256: 693882f32593be1a5a511afc4e08a4fba5fe390f75090efef1d655d488a2a212
font_01_sfnt_off0000e1a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1A9 11416 bytes
SHA-256: 162e7de16fa32e6afedee424f089aff0a7521c7c3c5535f4368cc432469edfaa
font_02_sfnt_off00010895.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10895 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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