Malicious PDF — malware analysis report

Static analysis result for SHA-256 75a70d2340f29e3c…

MALICIOUS

PDF

71.4 KB Created: 2020-11-12 12:40:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 623dd35b2c6f4f25b1d9c65990ac3d95 SHA-1: db2aa9bee08bbbd34245ffd3792d68f93981834c SHA-256: 75a70d2340f29e3cac510d7835161ded2efc3d724733a5e5503ee62388483199
162 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. It uses an urgency-based lure. The file routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://cctraff.ru/strik?utm_term=greenwood+airvac+s90+manual In PDF document text
    • https://cdn-cms.f-static.net/uploads/4378404/normal_5f8a5d1c54760.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402246/normal_5fab3aeb661b1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427499/normal_5fab85fdca9e3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389095/normal_5f9038ffe4545.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366027/normal_5f86f8b1755c2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426832/normal_5f9d374f8b2ca.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/sugosubexez/der_eisendrache_fire_bow_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/zetare/28436822412.pdfIn PDF document text
    • https://s3.amazonaws.com/nimuwet/guru_mann_ultimate_arms_workout.pdfIn PDF document text
    • https://s3.amazonaws.com/zinudipir/lajaxuzesewumigesav.pdfIn PDF document text
    • https://s3.amazonaws.com/jepavilutabilel/signed_sealed_delivered_cast_2020.pdfIn PDF document text
    • https://s3.amazonaws.com/lupebesu/rea_magnet_wire_ct.pdfIn PDF document text
    • https://s3.amazonaws.com/fizaxo/blackweb_wireless_charger_stand.pdfIn PDF document text
    • https://s3.amazonaws.com/rekawexuretowo/canada_city_list.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
    • http://www.geocities.com/mitra_anirban/hobbies.htmGNUIn PDF document text
    • http://www.gnu.org/copyleft/gpl.htmRegularIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ccbd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCCBD 5564 bytes
SHA-256: c03d845b953dcb5d31013b208db5962801bba647e893f71f91c022f1e93d5ffe
font_01_sfnt_off0000dfa0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFA0 3720 bytes
SHA-256: a7c194c348f4bc26aad06ae1fa1eadf76503a3aca856ff80314c3d87a816eea9
font_02_sfnt_off0000eb00.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB00 10880 bytes
SHA-256: 7f2e00d5cab5adde0eec3cdfcb287d199799b7b3c61ca9dd181486405d8f0808

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