Malicious PDF — malware analysis report

Static analysis result for SHA-256 9cda969792e22539…

MALICIOUS

PDF

80.5 KB Created: 2021-04-24 15:11:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-02
MD5: adb9430a09da03cafd65fc40175e9ea6 SHA-1: 267d29273eb90dec5baf08d690be22f742d7f51e SHA-256: 9cda969792e225392c975e1a19e0a9f69a6d715899870e9d6908c355c0f29768
126 Risk Score

Malware Insights

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

The PDF contains numerous external links, many pointing to disposable domains and employing UTM parameters, indicative of a link farm designed to redirect users. ClamAV and ML classifiers identified this as a phishing or malicious PDF. While no scripts were explicitly extracted, the PDF structure and extensive URL usage suggest it's designed to lure users to malicious sites, likely for phishing or malware delivery.

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://leonvi.ru/strik?utm_term=wu+tang+tv+series+cast PDF link annotation
    • http://dream-stat.ru/blank_calendar_template_october_2018cgb8s.pdfIn PDF document text
    • http://blankid.ru/memezubosoromafawa9zjsv.pdfIn PDF document text
    • http://in-arenas.com/kulolowojof0zdgx.pdfIn PDF document text
    • http://wegaturagifo.getenjoyment.net/download_twilight_saga_eclipse_in_hindi_filmyzilla.pdfIn PDF document text
    • http://musc-media.xyz/tikozemilvn6c.pdfIn PDF document text
    • http://finipupote.mywebcommunity.org/how_to_make_a_3d_candy_cane_out_of_paper.pdfIn PDF document text
    • http://appeal-ig.com/xoruxafokaxosimuwagogaat6fy.pdfIn PDF document text
    • http://shoop-fl.ru/72321050731w9d8o.pdfIn PDF document text
    • http://getyourscore.info/24115178970huwb3.pdfIn PDF document text
    • http://titoto.xyz/tiraneworuzupifizepajomfp14.pdfIn PDF document text
    • http://myyshooop227.site/evenflo_symphony_3-in-1_car_seat_instructionsgt4r7.pdfIn PDF document text
    • http://filemarker.store/narrative_essay_sample2hu7n.pdfIn PDF document text
    • http://rasprodavaika.ru/88632344941isu9m.pdfIn PDF document text
    • http://prizinsta365.website/imogen_heap_hide_and_seek_vocoder_chords1yr5s.pdfIn PDF document text
    • http://allroadkamchatka.ru/does_percy_jackson_appear_in_the_son_of_neptunepzfv4.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://0e9c393c-9feb-4465-ae9d-4486bea7a644.filesusr.com/ugd/4b68be_7d7dea0e73564077951aeb2e20d86124.pdf?index=trueIn PDF document text
    • https://f8e303d0-f350-43d2-b7c3-f886ef13ec25.filesusr.com/ugd/1bb397_b7e7c023b5f1432dbbde1bbff4b7364b.pdf?index=trueIn PDF document text
    • https://8be317c1-93d6-4444-9a1c-030c84ae583f.filesusr.com/ugd/709942_70894d13c6df45459b8efbd0cd67c8f6.pdf?index=trueIn PDF document text
    • https://0fdd9f25-8366-4660-9463-376fd915ad39.filesusr.com/ugd/c16cf9_bf66e1167ded45b5afea76344de2ff3d.pdf?index=trueIn PDF document text
    • https://dce579ed-4708-43c3-aaeb-2c76a6268d78.filesusr.com/ugd/944939_9149fb92e2c64f54b73c7c8277017232.pdf?index=trueIn PDF document text
    • http://xuvekixofeku.onlinewebshop.net/arabic_to_urdu_vocabulary.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_off0000fd58.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD58 5008 bytes
SHA-256: 09a3118e95b3a2243ca1d96bc5c8ffcc484f60d55f5ff524d108065f818828b4
font_01_sfnt_off00010e8a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10E8A 11368 bytes
SHA-256: 1a2e58347b5dcc4ef9fd55cb39480debf307298b65c9bbe763506401020262e5

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