Malicious PDF — malware analysis report

Static analysis result for SHA-256 3a1be810d548fc7d…

MALICIOUS

PDF

81.8 KB Created: 2021-03-15 07:46:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: cfcf8c90e04a56188917f753febb3839 SHA-1: 9d33d1abf6c6c3e8bf3f60dfb9b42c3ece6fe2da SHA-256: 3a1be810d548fc7d5973727d7e0f378b33eecc7fe17bcba733419845217a45d8
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 0.9996

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://maypoin.ru/wix?keyword=hidden+heritage+reading+plus+answers PDF link annotation
    • http://tuwasukam.getenjoyment.net/elijah_of_buxton_summary_chapter_13.pdfIn PDF document text
    • http://vamoktin.ru/venom_carnage_unleashed_comicq77xr.pdfIn PDF document text
    • http://kernig.store/89602786004ncuc5.pdfIn PDF document text
    • http://fajesamosini.sportsontheweb.net/tuvoluzu.pdfIn PDF document text
    • http://youla-24.cc/38138921160h01un.pdfIn PDF document text
    • http://savineme.mywebcommunity.org/13488918528.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://uploads.strikinglycdn.com/files/ce98c5b2-15c9-4fc5-a0ff-9e06fc6a72aa/how_to_block_anonymous_calls_on_panasonic_cordless_phone.pdfIn PDF document text
    • https://s3.amazonaws.com/vutame/camera_effects_app_free.pdfIn PDF document text
    • http://doritiwenoxa.onlinewebshop.net/little_sas_book.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f743fedf-1834-419d-a2dc-fd7f187135c7/how_to_turn_graco_nautilus_into_backless_booster.pdfIn PDF document text
    • https://s3.amazonaws.com/rezugekolaba/why_wont_my_gas_snow_blower_start.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7299f0ec-c3fb-4591-86e3-d323d40af103/kuxije.pdfIn PDF document text
    • https://s3.amazonaws.com/vukumesoj/eft_advanced_analytics_platform.pdfIn PDF document text
    • https://s3.amazonaws.com/savukojubusum/30558727403.pdfIn PDF document text
    • https://s3.amazonaws.com/kakekojezutok/muwud.pdfIn PDF document text
    • https://s3.amazonaws.com/lomogas/63527188718.pdfIn PDF document text
    • https://s3.amazonaws.com/vedexajawo/fefexopirevesukixeve.pdfIn PDF document text
    • http://fojakosi.atwebpages.com/mythic_odysseys_of_theros_races_reddit.pdfIn PDF document text
    • http://dowuvoduwitovos.atwebpages.com/how_to_fix_a_broken_stove_knob.pdfIn PDF document text
    • https://s3.amazonaws.com/sevoga/77666250251.pdfIn PDF document text
    • http://kikukuvikato.myartsonline.com/bsc_botany_honours_syllabus.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_off0000f2e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2E7 5044 bytes
SHA-256: 96901922de733b9f8ba9ebddc25a02cf00bbceaffae169852cfe43b21af3861d
font_01_sfnt_off000103ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x103FF 11616 bytes
SHA-256: bce13cb7ef686fbef84bfc3a174264b340e8194b207543a0e04fd09976a827bf
font_02_sfnt_off00012b7d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12B7D 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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