Malicious PDF — malware analysis report

Static analysis result for SHA-256 15700d3a34340dc1…

MALICIOUS

PDF

76.1 KB Created: 2021-03-11 00:58:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 6b1344b850f93a148350eaec0ad12b11 SHA-1: 54b7fe620d9e83cf4056f809d680e486fac17ead SHA-256: 15700d3a34340dc16709c75cc90a3416b663a5b6de6007fc72688cf1a73410e8
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 0.9996

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 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://xezojetit.ru/123?utm_term=netflix+on+smart+tv PDF link annotation
    • https://cdn.sqhk.co/vusutazomaga/hDnij1l/vorip.pdfIn PDF document text
    • https://cdn.sqhk.co/nogawevorus/3RAichd/xotufitegikanuvo.pdfIn PDF document text
    • https://cdn.sqhk.co/zipuzedozame/aeqVhe6/65336556800.pdfIn PDF document text
    • https://cdn.sqhk.co/xawobovuji/mZFhbia/11325893790.pdfIn PDF document text
    • https://cdn.sqhk.co/vilitemeru/eQidjhu/4235791855.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://e209d09f-5af8-48a0-acfc-72d03e9bea0d.filesusr.com/ugd/946fcc_e87919f2bc1e407192b3a6f70f8af584.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/3da47e2e-dcbf-4167-9e0a-184cf2348645/english_dictionary_app_without_internet.pdfIn PDF document text
    • https://s3.amazonaws.com/jobavo/baxupobubolatuwivibud.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f86bd348-65eb-44ee-b397-d974136dc2b3/how_much_are_my_nascar_diecast_cars_worth.pdfIn PDF document text
    • https://s3.amazonaws.com/loxopudizus/56349232796.pdfIn PDF document text
    • https://s3.amazonaws.com/zesixefe/allok_total_video_converter.pdfIn PDF document text
    • https://s3.amazonaws.com/legesiliv/2483382763.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7ffdf083-a8f4-408f-91a1-80d64906cde0/citizen_at4010-50e_uk.pdfIn PDF document text
    • https://2a4c341d-9af7-4f89-b48a-1b926ad6ced7.filesusr.com/ugd/dd6616_4b8df8b76ad04167b8552d908a6a0ef6.pdf?index=trueIn PDF document text
    • https://36fc1fe3-b646-4cc1-b6e9-de51469aea27.filesusr.com/ugd/3eb4bd_71e6aa2ef16f49b6af0273b413d79a12.pdf?index=trueIn PDF document text
    • https://29aa9d28-cc9d-45fc-8d86-3718b5881c84.filesusr.com/ugd/74c34a_a282edd5dd6d46d39437c453dfacaa1a.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/resixexi/fishing_planet_bowfin_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eba09711-4bca-4019-a231-2434b75e141a/does_skinny_up_really_work.pdfIn PDF document text
    • https://02bc4616-4eae-4b38-b2c9-0e654f754ee0.filesusr.com/ugd/069df5_e0ccf98921af4b559ad481ca267e7b63.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/2d4356bd-c300-467f-abf6-962b1386e732/lukerurobotalogugodinum.pdfIn PDF document text
    • https://af431a04-9ebc-4ea4-a98d-45e4ffbfad14.filesusr.com/ugd/485053_d2ef88a09ef34b22809ee6c33552f7f4.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 7

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_off0000ee78.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE78 5012 bytes
SHA-256: 8ee6a1f9da831f0471d3f370721540699ccf3a77ff5f3269df269b99784ae55c
font_01_sfnt_off0000ff7b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF7B 10356 bytes
SHA-256: 67e24392aecdad99530d8125115825718603e662800a456269545681c04d5d0b

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