Malicious PDF — malware analysis report

Static analysis result for SHA-256 c0a65a2d6fd5c587…

MALICIOUS

PDF

68.9 KB Created: 2021-02-19 11:10:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 2e058e6198863d380d67feda77d2c1a2 SHA-1: d73a5e4bac5e7da40c383406aba5d187c89916b4 SHA-256: c0a65a2d6fd5c587bb1b3d9fbc6da6e4843f3bbc4e57cf5f357957bfcb9b1d55
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 for 'Pdf.Phishing.Trojan'. The document contains numerous embedded URLs, many pointing to disposable hosting, suggesting a link farm or redirection scheme. While no scripts were explicitly extracted, the presence of external URIs and the overall detection profile indicate a malicious intent, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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 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://druttle.ru/wix?keyword=ozark+trail+10+person+3+room+cabin+tent+with+2+side+entrances PDF link annotation
    • https://cdn.sqhk.co/bijilixiger/aciabie/equalizer_music_player_pro_apk_free_download.pdfIn PDF document text
    • http://fusubakitakudup.66ghz.com/30295409584.pdfIn PDF document text
    • http://1freedom.space/panasonic_plasma_tv_power_light_blinking_3_timesipkv9.pdfIn PDF document text
    • https://cdn.sqhk.co/rufopunuk/ohehw03/gsd_puppy_runs_sideways.pdfIn PDF document text
    • http://zeropium.com/can_i_control_my_dvd_player_with_my_xfinity_remotec0mcw.pdfIn PDF document text
    • http://roralopokuzej.22web.org/jitiwogebuvowowojosejezo.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4391925/normal_5fd03ea970c59.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388842/normal_6021f4c2543dd.pdfIn PDF document text
    • http://muwabiva.iblogger.org/6489703623.pdfIn PDF document text
    • http://noverst.xyz/vans_logo_meaning_square_root_answerjq8s1.pdfIn PDF document text
    • https://cdn.sqhk.co/tadeketoxab/uhdMcie/lizaboveporojowinogamukew.pdfIn PDF document text
    • https://cdn.sqhk.co/puvegipuros/iaAidRS/loxosikeradobule.pdfIn PDF document text
    • https://cdn.sqhk.co/wanolugago/cggR3vM/27229488759.pdfIn PDF document text
    • http://goshop32.site/sefapaf24nt9.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://garaben.rf.gd/3132314137.pdfIn PDF document text
    • http://wanudoxemix.epizy.com/zejimududadijepuluparaxav.pdfIn PDF document text
    • http://xegiseko.epizy.com/foxig.pdfIn PDF document text
    • http://roweviwumi.epizy.com/wakis.pdfIn PDF document text
    • http://vizijikiwoler.rf.gd/9162260066.pdfIn PDF document text
    • http://zaxutakizet.epizy.com/achievement_unlocked_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_off0000cd2b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD2B 6176 bytes
SHA-256: 061432bdfeab35bf1a9a688d97b37df98599351874a727c1c7536da55f4b1df8
font_01_sfnt_off0000e218.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE218 10436 bytes
SHA-256: 23e051452f8e6169db230f433097e32f2ea953f48d1a9f37b4d96649347ad5b6

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