Malicious PDF — malware analysis report

Static analysis result for SHA-256 d2296a8b818557f1…

MALICIOUS

PDF

74.7 KB Created: 2021-04-13 23:48:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 02639edf6196970253c598248ddede14 SHA-1: 2122b961bd5a347c446ef73c87b9f1b04c25e5be SHA-256: d2296a8b818557f1a0f6c9c3a903db856289c2f1bb7d5d0c4af9694504061de8
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-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://crophysi.ru/strik?utm_term=conceptual+physics+textbook PDF link annotation
    • http://nalodorepuwag.getenjoyment.net/anatomy_for_artists_free_download.pdfIn PDF document text
    • http://myirn.icu/14467454602mo6am.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413987/normal_6047bb66477fc.pdfIn PDF document text
    • http://uaregroup.com/defiant_led_270_degree_motion_sensor_security_floodlighteq0yr.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476765/normal_5fce535c8a260.pdfIn PDF document text
    • http://gutprod.xyz/wotidotso6sz.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421329/normal_604cff23e8c19.pdfIn PDF document text
    • http://zoluwofemofuper.sportsontheweb.net/human_geography_ap_exam_questions.pdfIn PDF document text
    • http://salimom.mygamesonline.org/ctet_answer_key_2020_download.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://3315be42-5dab-4b6e-b44d-105cb490973e.filesusr.com/ugd/2e3488_7cf7644002094148877f6ef5b09b1357.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/wajibile/yellowfin_tuna_price_per_pound_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/kubafezin/bitdefender_antivirus_plus_2015_free.pdfIn PDF document text
    • https://ddb0fe67-a09a-413d-b59a-c21b1dde3186.filesusr.com/ugd/3f0e57_a053430e168048d391599e7866e271a8.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/xoguwavosuje/pokemon_cards_online_games_free_no.pdfIn PDF document text
    • https://4f6c49ad-35c2-4e1b-a50e-a4ca4816ee30.filesusr.com/ugd/a28dad_73154344236344acb5f5f6403af2648b.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/setigafat/layers_of_the_atmosphere_webquest_answer_key.pdfIn PDF document text
    • https://7211abc3-b26e-437e-abd8-8a8c7ebd4af5.filesusr.com/ugd/0683fb_b36e7749e51f45219ca1ee45ef47514a.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/verirejon/romoruvopifes.pdfIn PDF document text
    • http://wowutuzineko.myartsonline.com/jiseperumifovo.pdfIn PDF document text
    • https://3c2b787d-8465-4662-bdcc-bf736d584291.filesusr.com/ugd/8760e7_6917d2ee16ea4a1fb3f1199c7142bf31.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/zuwosil/check_engine_light_codes_on_jeep_grand_cherokee.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_off0000e879.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE879 5204 bytes
SHA-256: 085a3c1b7d00f4652e6046c5b35a0359ba10aaeb8e3c7613959c5028d0f85172
font_01_sfnt_off0000fa2a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA2A 9904 bytes
SHA-256: 9844be9526f9c7a648a7bf7c51b65c1bff032a5eab1b1fa390181d9763a29caf

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