Malicious PDF — malware analysis report

Static analysis result for SHA-256 293353dc7549e3e3…

MALICIOUS

PDF

83.9 KB Created: 2021-03-22 08:23:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: 0c8f9dd02c53774fbbcbed0638a14f88 SHA-1: c96e23ca53666afef1d47273e912635342a699ec SHA-256: 293353dc7549e3e3e7fbaedc1385a7dac038fb6dd1e70d0bb250df74c2efd918
126 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier, indicating malicious intent. It contains numerous embedded URLs, many pointing to disposable hosting, suggesting it functions as a link farm designed to redirect users to potentially malicious sites. The presence of external URIs and the 'link farm' heuristic strongly suggest a phishing or malware distribution vector.

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://ponafet.ru/wix?keyword=arcadyan+device+on+network PDF link annotation
    • https://norabemomo.weebly.com/uploads/1/3/0/9/130969424/pavufifa.pdfIn PDF document text
    • https://begazasageb.weebly.com/uploads/1/3/1/6/131637419/sativoperewubesulira.pdfIn PDF document text
    • http://damita.fun/chocolate_pound_cake_recipes_using_cake_mixp35ed.pdfIn PDF document text
    • https://cdn.sqhk.co/pulurune/eVbo7gf/drug_and_alcohol_policy_template_wa.pdfIn PDF document text
    • http://firstflirts.site/55839869034gs0li.pdfIn PDF document text
    • https://cdn.sqhk.co/nojedevatas/HAHihgc/52755236469.pdfIn PDF document text
    • https://cdn.sqhk.co/retobumoki/Tw8Sja3/save_the_puppy_wonder_pets.pdfIn PDF document text
    • https://cdn.sqhk.co/dopuwene/5hjpiiU/jacky_s_farm_match-_3_adventure_course.pdfIn PDF document text
    • http://xodaxedepapopox.mygamesonline.org/nefenixuvezedigorax.pdfIn PDF document text
    • https://cdn.sqhk.co/kivipemo/gciihgY/luzelak.pdfIn PDF document text
    • http://kolomata.ru/adm_er_apkpurep3ssw.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/09c21fc2-4225-460e-aae6-85878fb53762/29458609741.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/239ca284-a768-4e60-9728-dbfb71bea2b7/gedawasulege.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/70cac942-ea9c-444e-bd7c-aa9024aa9b9a/61122839519.pdfIn PDF document text
    • http://tepominofujemo.atwebpages.com/tejepovasaxanisuwi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5a284952-e22b-4bee-9274-f2b965ab3c4d/gone_michael_grant_age_rating.pdfIn PDF document text
    • http://takolonopafa.epizy.com/simple_present_perfect_worksheet.pdfIn PDF document text
    • http://pimoxonevuwewax.atwebpages.com/8213141033.pdfIn PDF document text
    • http://togotavasokuzez.epizy.com/essential_hypertension_pathophysiology.pdfIn PDF document text
    • http://genenapukiral.epizy.com/b_w_formation_duo_au.pdfIn PDF document text
    • http://xujalupa.epizy.com/itoya_art_profolio_spine_template.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_off00010aa5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10AA5 5032 bytes
SHA-256: 1237c21e532839258b3e316b471d5c33990024917082aef50a540c209fa31651
font_01_sfnt_off00011bf2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11BF2 11248 bytes
SHA-256: f1ebb9beaa79dfaa20543a45bab020aac0447646ba66d6086879f4e347cefd22

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