Malicious PDF — malware analysis report

Static analysis result for SHA-256 eee20af68b6fd5f9…

MALICIOUS

PDF

79.9 KB Created: 2021-04-02 18:41:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 96505f37817a86572f617850960764d9 SHA-1: 7333e2334c7a1a9a8318588a4d2decc5ee5e0f9a SHA-256: eee20af68b6fd5f990488ab6f3a6c55b57493570663f91bcc879b2afd051deb9
196 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 and 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 0.9998

Heuristics 6

  • 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.
  • Payment redirection / bank-detail change lure high SE_PAYMENT_REDIRECT_LURE
    Document describes new or changed bank, wire, ACH, IBAN, SWIFT, or routing instructions — a high-value business-email-compromise 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://kuzutuzo.ru/strik?utm_term=how+to+use+plantronics+headset+with+laptop PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4375073/normal_5fc5efe1e3fa0.pdfIn PDF document text
    • http://health-top.ru/video_game_awards_2020_game_of_the_yearf9jt8.pdfIn PDF document text
    • http://mylevel.store/85930859431p89je.pdfIn PDF document text
    • http://igafnd.org/13780594058nx9r.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465565/normal_5fd23f86aaf0d.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://4de1274e-a26b-4e71-a0d1-d86f0cfee7ee.filesusr.com/ugd/ee4d88_e5508a26dbcf4994b05e3212b0c66846.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/tiluwisulepam/57221378887.pdfIn PDF document text
    • https://s3.amazonaws.com/xapota/can_you_learn_dbt_on_your_own.pdfIn PDF document text
    • https://s3.amazonaws.com/dowavelaxam/every_living_thing_james_herriot.pdfIn PDF document text
    • https://s3.amazonaws.com/xezonijida/windows_10_update_offline_64_bit.pdfIn PDF document text
    • https://s3.amazonaws.com/radubozufiwo/zipoxedukuduk.pdfIn PDF document text
    • https://s3.amazonaws.com/makumapikeze/80550419726.pdfIn PDF document text
    • https://s3.amazonaws.com/jemisajoda/lg_washing_machine_top_loader_not_draining.pdfIn PDF document text
    • https://s3.amazonaws.com/mokuwanibof/heartsaver_first_aid_cpr_aed_card_template.pdfIn PDF document text
    • https://s3.amazonaws.com/kavugusepe/husqvarna_riding_mower_yth24v48_drive_belt_replacement.pdfIn PDF document text
    • https://s3.amazonaws.com/zijivevip/lajujapagutudusasorilag.pdfIn PDF document text
    • https://s3.amazonaws.com/kobivimelelo/guerreiras_de_orao_stormie_omartian.pdfIn PDF document text
    • https://945b3f91-9c76-4178-be32-f0dab3cfe2c6.filesusr.com/ugd/8d5d69_082221ca6d714a9d9d4432db6ef4f9ea.pdf?index=trueIn PDF document text
    • https://30383b9b-b26a-44f4-9a26-03873af8f03c.filesusr.com/ugd/fdee49_9a8b016eacca4ecba7527e23465eacc3.pdf?index=trueIn PDF document text
    • https://7f793f8f-877f-420e-851b-8bae9ea62a4d.filesusr.com/ugd/78c764_bbf5c5b447454c32a4c5f87d225f2375.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000edb9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDB9 5096 bytes
SHA-256: 5b00e8665af58fd9ba00a1ea9087e6163f750fe46f52980e7dbd3d0c8f9543a5
font_01_sfnt_off0000ff09.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF09 10868 bytes
SHA-256: 80e84fb58dae044de02d4e37ee8d0cfcd5130f7c3bb095cec065eb4e06ff4efe
font_02_sfnt_off0001240e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1240E 4324 bytes
SHA-256: 7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71

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