Malicious PDF — malware analysis report

Static analysis result for SHA-256 1544d7787991d752…

MALICIOUS

PDF

81.2 KB Created: 2021-03-20 02:23:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: dcd0ad5d2a60d516c8404541339951f2 SHA-1: d01f3065cef15f4b373f7cb3f46ce8f8d3d78782 SHA-256: 1544d7787991d752500f28f5e7cda86e25384f66b60df610444429c2f1f53005
126 Risk Score

Malware Insights

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

The PDF file contains numerous external links, many of which point to disposable hosting and are used in a link farm pattern, suggesting a phishing or malicious redirection attempt. The ML classifier and ClamAV detection strongly indicate malicious intent, specifically identified as a phishing trojan. While no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of a phishing lure designed to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://botokaw.ru/strik?utm_term=memory+rescue+master+package+reviews PDF link annotation
    • http://luxasireku.sportsontheweb.net/47064494451.pdfIn PDF document text
    • http://lazategomid.scienceontheweb.net/autopsy_report_template.pdfIn PDF document text
    • http://ravovenovibu.medianewsonline.com/how_to_write_roman_number_100.pdfIn PDF document text
    • http://vorakumezaxof.mygamesonline.org/with_gods_help_i_can_do_all_things.pdfIn PDF document text
    • http://bumumapa.mypressonline.com/jikuwirinabixalami.pdfIn PDF document text
    • http://biniwitovo.mywebcommunity.org/papad.pdfIn PDF document text
    • http://zagodutaf.getenjoyment.net/azitromicina_40mg_ml_bula.pdfIn PDF document text
    • http://lebedugipul.mywebcommunity.org/beethoven_violin_sonata_10_analysis.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://dc6b22d1-fd3c-476a-b8f1-b0505981f591.filesusr.com/ugd/ab5adf_a0722a445ecd442785f89c903f8dfaf0.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/bf516aa8-c7c2-4de3-a707-967e462b0a2b/vudavonom.pdfIn PDF document text
    • http://lugifer.onlinewebshop.net/garivixaridotodefo.pdfIn PDF document text
    • http://puwagof.rf.gd/hallelujah_mp4_song_free.pdfIn PDF document text
    • http://zujuguj.epizy.com/gadenawuzafiduxab.pdfIn PDF document text
    • http://zepuwiz.atwebpages.com/how_to_return_to_sender_post.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d03bb9f9-2ec5-4e01-bda8-1e2be87542b4/dozijo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aecd0f35-cbcb-4f00-817f-c9bd8d54b045/mutoroximiwituxenadidiwi.pdfIn PDF document text
    • http://robopawize.epizy.com/livulogeweluvuxibeka.pdfIn PDF document text
    • http://nanomunem.epizy.com/autosketch_pro_app.pdfIn PDF document text
    • https://03aaa7dd-6608-466c-a68c-f41c59811c05.filesusr.com/ugd/ae15ca_5e841482f1f4454e907df5de02b68d3d.pdf?index=trueIn PDF document text
    • http://kivabidugitu.rf.gd/surixudozuxanikemekowuv.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/960b72ad-f2f2-44a8-a903-1d4913744e72/que_es_la_biblia_cristiana.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_off0000fc29.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC29 5544 bytes
SHA-256: 8747ce79d9044ffb32118265c8f6ad3315be404407c4aea8b50100d8ecb37e6f
font_01_sfnt_off00010f24.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10F24 12320 bytes
SHA-256: b23a1d12b463f4ed3984c49dab8bb4a273a0ef11c8b59ad2d2943550a04fea68

Open this report in the interactive analyzer, or submit your own file for analysis.