Malicious PDF — malware analysis report

Static analysis result for SHA-256 29be5df8c83a6e54…

MALICIOUS

PDF

76.7 KB Created: 2021-05-25 11:46:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 23e86328a94894152f8eef0068214a83 SHA-1: 9b7cb22dd547efb71edae245c42e654a2e4d91bf SHA-256: 29be5df8c83a6e540e8d9aa21dd06fd9cdda60ac5fecab8a5baedd9d09ff7471
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 0.9995

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/strik?utm_term=iron+deficiency+anemia+treatment+guidelines+pediatrics PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4368243/normal_6065616bae0ca.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4479224/normal_5ff80fa8cae22.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4468551/normal_6011cdc1665b8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366343/normal_6026bf904e9e3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4501632/normal_5fe7ce91617c4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4464862/normal_5ffdc3e7a0124.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379837/normal_602c460093b48.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/5d5b1130-a4f7-437e-85aa-3c60e157ab40/prodigiorum_ac_ostentorum_chronicon.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/648fc044-5c37-4f77-9253-7c2a080de956/kebigewidejivejikubaroleg.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aeeb73fb-2dbc-41ed-8ccc-0eb470f4ae19/rodulo.pdfIn PDF document text
    • https://s3.amazonaws.com/jifedefujodu/asus_rt-ac68u_default_login.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d382599b-806b-4fbf-858e-612aadb463b9/fawaxutinujibaxotopubo.pdfIn PDF document text
    • https://s3.amazonaws.com/tokudapele/github_ubuntu_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/wuzalugiseto/game_badland_brawl_mod.pdfIn PDF document text
    • https://s3.amazonaws.com/bubeto/the_gender_secret_series_enid_blyton.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/41e751b2-8ea1-4227-8105-f6da8a7bd105/75789346356.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/457faee4-6dfe-4e83-81a5-614703fb70da/timex_ironman_watch_battery_life.pdfIn PDF document text
    • https://s3.amazonaws.com/gedesisumi/bring_sally_up_workout_song.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/434e417b-1606-48ed-9818-6bfa69edab32/27449723156.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/627b5a1a-1eca-467f-b30e-f59236ec7b06/do_stock_markets_close_early_today.pdfIn PDF document text
    • https://s3.amazonaws.com/jikopot/59068503155.pdfIn PDF document text
    • https://s3.amazonaws.com/dazifozixawus/8245794910.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d66d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD66D 5512 bytes
SHA-256: 9ad06bdd2f7f98879146e6309d5a647bfe5b0487acc6822c6906d22747c1c081
font_01_sfnt_off0000e927.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE927 10824 bytes
SHA-256: 384349cc0a8f56a039ce1c39feee0c24a45a9a74bcd309dfe42fd406a872d7aa
font_02_sfnt_off00010e45.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10E45 16416 bytes
SHA-256: e1b2b4688557f53d7bb3b0cae3646c5c298247c7f5722a4b8c84b67043f591e1

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