Malicious PDF — malware analysis report

Static analysis result for SHA-256 d5ee01a101b44bef…

MALICIOUS

PDF

79.6 KB Created: 2021-03-18 20:08:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: d7129c75053f8e8f5c1398eedc30d0d6 SHA-1: db03878ddf4fa07b87c143cef5d903833330bf7c SHA-256: d5ee01a101b44befd30855cdbb774ae36ced186747ab6467d393f72b7a40397e
156 Risk Score

Malware Insights

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

The PDF contains numerous external links, many of which are part of a link farm designed to manipulate search engine results. The primary malicious URL identified is 'https://baarspo.ru/strik?utm_term=mtd+yard+machine+snowblower+5%252F24+manual', which is likely used for phishing or to serve a second-stage payload. The ClamAV detection and ML classifier strongly indicate malicious intent, classifying it as a phishing trojan.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://baarspo.ru/strik?utm_term=mtd+yard+machine+snowblower+5%252F24+manual PDF link annotation
    • https://cdn.sqhk.co/lituxopevuk/G5ibNLs/crunchyroll_premium_plus_vs_mega_fan.pdfIn PDF document text
    • http://sayseedokg.com/free_download_games_cooking_dash_3_full_versionq0x77.pdfIn PDF document text
    • http://it50disconto.pro/batman_the_long_halloween_movie_release_dateu6gav.pdfIn PDF document text
    • https://cdn.sqhk.co/dizukenepu/qigiayc/black_friday_sales_now_at_walmart.pdfIn PDF document text
    • http://domsale.xyz/restaurant_inspection_checklist_templatex8jpc.pdfIn PDF document text
    • http://f13x.xyz/how_long_until_my_18th_birthdayhxclc.pdfIn PDF document text
    • http://shoop-fr.ru/ebooks_download_sitesd4lra.pdfIn PDF document text
    • https://cdn.sqhk.co/wolowivem/ghNibJs/duet_songs_2019_pop.pdfIn PDF document text
    • http://zoneeuro.pro/gujeril0rrzy.pdfIn PDF document text
    • http://top-shop-store.website/clinical_guidelines_in_physiotherapy_practicei44m2.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://a181bb3e-7445-4f1f-a1cf-b2fe66c13e92.filesusr.com/ugd/91ce54_47ee4ee135bf4988a8eabe1763a47303.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/fidobakipivogit/gavazumoragutudagusum.pdfIn PDF document text
    • https://s3.amazonaws.com/tufitijinexu/198857464.pdfIn PDF document text
    • https://cb2d4818-2134-4ea5-ae57-1bc45cfc4292.filesusr.com/ugd/7e787c_b1a808784bab4e2683b352f4ba27598b.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/jivagajamav/kefupigebisalobufaratode.pdfIn PDF document text
    • https://s3.amazonaws.com/temujonuwu/logitech_g710_buttons.pdfIn PDF document text
    • https://s3.amazonaws.com/kujapomib/komibisunem.pdfIn PDF document text
    • https://4fdc5cb1-0646-4ed0-9ac1-f9332ff2c333.filesusr.com/ugd/9b9480_6f84629a994e4037a103d54428dc37be.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/zazelujeju/11649804398.pdfIn PDF document text
    • https://s3.amazonaws.com/zufojadibi/complete_blood_cell_count_report.pdfIn PDF document text
    • https://s3.amazonaws.com/xomepixo/munekezudaveku.pdfIn PDF document text
    • https://s3.amazonaws.com/tinivukedeta/homogeneous_transition_metal_catalysis.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e754.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE754 5780 bytes
SHA-256: 12ef4939c5d9a2b24a1188abed31e07da9cd1a27d89581ecfa394f561d0c12b0
font_01_sfnt_off0000fb06.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB06 11508 bytes
SHA-256: f7ac061634f621e0e80558b7f2175a40da1398d3e2d6bf286096af422b9b94da
font_02_sfnt_off00012260.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12260 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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