Malicious PDF — malware analysis report

Static analysis result for SHA-256 c6c2249464648925…

MALICIOUS

PDF

70.4 KB Created: 2021-03-31 11:22:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: 785367840cd3895e74050748414d1a57 SHA-1: b19f80a74b45c9ad78489c520f65221105853813 SHA-256: c6c2249464648925c53fd112bf802cd6437431aa82038fb0ee1062fd0f651328
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF document contains numerous embedded links, many pointing to disposable hosting services, and is flagged by ML classifiers and ClamAV as malicious. The document body suggests a lure related to "Cpm cc algebra 2 answers", indicating a phishing or scam attempt. While no scripts were explicitly extracted, the PDF structure and embedded URIs are indicative of malicious intent, likely to redirect users to phishing or malware distribution sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://baarspo.ru/123?utm_term=cpm+cc+algebra+2+answers PDF link annotation
    • http://gasomenuza.iblogger.org/install_android_apps_on_iphone_jailbreak.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381543/normal_6039a3755c399.pdfIn PDF document text
    • http://ryukzak.digital/billed_customers_for_services_performed_accounting27a1z.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4377663/normal_5ffbca7081503.pdfIn PDF document text
    • http://changepass.online/ukulele_strumming_patterns_4_4d4fg6.pdfIn PDF document text
    • http://brightshopbg.xyz/3ds_max_models_free_office_furniturehp2rw.pdfIn PDF document text
    • http://jofarofuwudeveb.66ghz.com/farsi_urdu_lughat.pdfIn PDF document text
    • http://strongcreditscore.info/vajuloxubuvozunape5vx8n.pdfIn PDF document text
    • http://erogan-columbia.site/how_to_be_a_great_restaurant_serverx6bpk.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tavupikegoseri.epizy.com/final_fantasy_7_remake_walkthrough_part_14.pdfIn PDF document text
    • http://weralawubuzeg.epizy.com/unikey_cho_win_7.pdfIn PDF document text
    • https://s3.amazonaws.com/zuxime/sezuw.pdfIn PDF document text
    • http://kebanibaru.epizy.com/variable_frequency_drive_working_principle.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7d9f1dc1-6e62-45ab-bb62-8386a7bf6eb7/snow_white_wicked_queen_apple.pdfIn PDF document text
    • http://fepesori.rf.gd/fomuxurigigiritesevubar.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/db2e8680-72fb-4c2d-9330-b7a42c601f42/62774798214.pdfIn PDF document text
    • http://wemitagokodunes.epizy.com/bacterias_aerobias_e_anaerobias.pdfIn PDF document text
    • https://s3.amazonaws.com/zuvovoxigumuz/vaxekidavu.pdfIn PDF document text
    • http://tebokemirutexus.rf.gd/92203346118.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c841e2b6-1463-493e-bb92-5efb94a93f33/arduino_uno_two_software_serial.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/edf21347-edd7-4677-a4ee-edd97d21795f/89813921241.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dbe51fa7-b995-4e94-b91d-72bb17e44c46/89785435005.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

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d51e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD51E 5524 bytes
SHA-256: 17ddfdb681b2be699ab143f65be579eed3e89ea1a5e336e619a1582293ca4c3a
font_01_sfnt_off0000e7d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7D7 10720 bytes
SHA-256: 9d44b05d81c6795c90149f57d2493243c92cf5082afdc37ec410cdab5711dc42

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