Malicious PDF — malware analysis report

Static analysis result for SHA-256 13207a14b8042901…

MALICIOUS

PDF

70.1 KB Created: 2021-03-19 12:27:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: c80f457550313d51ad4c2e0bac60160c SHA-1: 96d3d892b46955afe368b8ce7732707a5d9cd8bc SHA-256: 13207a14b804290176b51a6369e828f0770d68fe23023b3d7408510db8bd2c5a
156 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. The file embeds a large number of external links characteristic of an SEO link farm. 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
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://dugedepap.ru/123?utm_term=reflection+and+refraction+worksheet+ks3 PDF link annotation
    • https://cdn.sqhk.co/sosobita/iemThfM/2pac_hit_em_up_lyrics_a-_z.pdfIn PDF document text
    • https://cdn.sqhk.co/kisereta/apjhyig/buffy_the_vampire_slayer_angel_episode_guide.pdfIn PDF document text
    • https://cdn.sqhk.co/jugomuzuteb/OThYcig/44506064619.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/39836eb3-0d8b-4d8c-8828-9cdd2beadc1b/putuvudisa.pdfIn PDF document text
    • https://s3.amazonaws.com/wovedukevikov/bafajazowu.pdfIn PDF document text
    • https://s3.amazonaws.com/gafedupeba/yamla_pagla_deewana_pk_songs_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6992190c-0001-433c-9822-8378b666bfd9/ea_sports_game_face_ufc_2_ps4.pdfIn PDF document text
    • https://s3.amazonaws.com/sefiwegegagu/kafazokaninulipewasi.pdfIn PDF document text
    • https://s3.amazonaws.com/jifesu/sql_charindex_vs_like_performance.pdfIn PDF document text
    • https://3485775d-af35-4505-8fb4-f6750f575e04.filesusr.com/ugd/42f18e_fafce2a2acd3438c9c112ff5b88fbcff.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/tesodagiwor/plague_inc_ios_apk_indir.pdfIn PDF document text
    • https://s3.amazonaws.com/juzowilipi/93316009295.pdfIn PDF document text
    • https://dc010c70-835d-4b56-8cb0-1e1bda7cab64.filesusr.com/ugd/fb576b_4ff3c6792e5f4213aac46cf4dc77afda.pdf?index=trueIn PDF document text
    • http://luwikomoxure.epizy.com/99704317707.pdfIn PDF document text
    • https://5b0ea1c3-b874-41d5-a3cc-49595beb80a6.filesusr.com/ugd/0c63be_f8e17cb55e614ace9b025f8284b7fa1b.pdf?index=trueIn PDF document text
    • http://gezibetaw.epizy.com/zezonidolodupe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5d3a8b4d-4282-42a8-b892-96d60249e115/what_is_the_quran_and_what_does_it_contain.pdfIn PDF document text
    • http://firiveperoju.epizy.com/66151210653.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0a8557f8-6af5-4032-908c-0d525fdf5b80/3175646723.pdfIn PDF document text
    • https://s3.amazonaws.com/rupatojuko/ginenapesuro.pdfIn PDF document text
    • https://71da2aa5-51c3-4f2c-ab18-08bbbad20131.filesusr.com/ugd/d216cb_f4246c9d14034029843c91466bb21dd7.pdf?index=trueIn 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_off0000d442.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD442 5436 bytes
SHA-256: 628a23055199e5fa8782b7a6e50fc3da6257db8ee4539ca61f3e5cc82293ecc2
font_01_sfnt_off0000e6db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6DB 10036 bytes
SHA-256: 0a066cb9aab6f11dffa2de11034a1e1580fee421ae0a230159988a83eeb60836

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