Malicious PDF — malware analysis report

Static analysis result for SHA-256 bd472040146dc068…

MALICIOUS

PDF

76.6 KB Created: 2021-05-17 04:14:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: b1b31769f49921d5fca6d012f589c0bc SHA-1: 5759b11bf2a56fd08589083659383345169d7295 SHA-256: bd472040146dc068463a35448c8679eac0e005c8dced1678f173a340bf7c2c69
96 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 external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://golowaki.ru/strik?utm_term=solving+quadratic+equations+worksheet+tes PDF link annotation
    • https://cdn.sqhk.co/gaxokakijefe/0igOYKc/lamipijokiru.pdfIn PDF document text
    • http://santaparker.store/painting_ideas_for_walls_and_doors7dme4.pdfIn PDF document text
    • https://cdn.sqhk.co/mowanideju/Aihia22/86568181157.pdfIn PDF document text
    • https://cdn.sqhk.co/musezikuzapi/ieeKVNo/dutir.pdfIn PDF document text
    • https://cdn.sqhk.co/xonipavu/hjc3kxO/kadipidomotovivudigo.pdfIn PDF document text
    • https://cdn.sqhk.co/wovegorarev/KiDgfxg/46874754207.pdfIn PDF document text
    • https://cdn.sqhk.co/zoturisa/chhOgdK/followers_and_like_for_tip_top.pdfIn PDF document text
    • https://cdn.sqhk.co/zuxedanafowa/lhigcPF/monkey_go_happy_4_worlds_2.pdfIn PDF document text
    • https://cdn.sqhk.co/moturalogupe/heijggs/wiragujulilizikexaxutifu.pdfIn PDF document text
    • https://cdn.sqhk.co/nezusoxe/gVdtsje/pixujorivalaxekodedo.pdfIn PDF document text
    • https://cdn.sqhk.co/levowexesu/ciijjax/nowonadomuwol.pdfIn PDF document text
    • http://gtmedis.com/segirafoxezeq48o.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/f1d2274e-14f5-44c6-afc4-4959ed9a794e/how_long_before_britax_car_seats_expire.pdfIn PDF document text
    • https://s3.amazonaws.com/xiwevitox/can_uppababy_vista_convert_double.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6e134bc4-bf92-4254-93be-819e2c93730e/ranikivinidunajojisapego.pdfIn PDF document text
    • https://s3.amazonaws.com/pusori/osi_model_7_layers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c432869c-7cd5-4798-a5b6-bbf840754206/where_to_buy_an_aeron_chair.pdfIn PDF document text
    • https://s3.amazonaws.com/widofafane/audio_sad_songs_punjabi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4a561586-05cd-4306-b8b1-f0d341c168c8/vozoropijukorizipexor.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f4a9b18b-c26f-4b9b-87f0-b93d71c2d64d/pamul.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eaef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEAEF 5648 bytes
SHA-256: 50a5f4a39974554ee69ce34f802589c16647be58b45eb2daed85ac26ec56ba9d
font_01_sfnt_off0000fe2f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE2F 11372 bytes
SHA-256: ad4b654587818c796379b96121620accb122c85516a9fda9a019aaf0c24e0979

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