Malicious PDF — malware analysis report

Static analysis result for SHA-256 ff170b3b2df9a2a9…

MALICIOUS

PDF

207.7 KB Created: 2021-04-04 16:58:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: ba280ced5c63a215e7b6cc88c27472ea SHA-1: 8dd053d0c2a369350545ef7d275b414a6d2ecdeb SHA-256: ff170b3b2df9a2a980b1bdd6c13faebb144771f75d04a1f863b2db252b2f2ff1
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 0.9818

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://mezovuduw.ru/award?keyword=history+of+arabic+language+in+urdu+pdf PDF link annotation
    • http://xolokukifimiv.sportsontheweb.net/nenorowezobejutixupezuv.pdfIn PDF document text
    • http://usacarins.com/what_is_the_first_harry_potter_book_to_readhkph9.pdfIn PDF document text
    • http://deutschebank-meine.com/40990067859ki6d9.pdfIn PDF document text
    • http://bewizasosu.sportsontheweb.net/90250352063.pdfIn PDF document text
    • http://disconto50.info/fl_studio_trial_free_download_for_androidvqbb5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446388/normal_603c4abfcd86a.pdfIn PDF document text
    • http://cccckkkkkdd.space/vuxelumasatapuruli8yv1c.pdfIn PDF document text
    • http://reduslim-sito.site/constipation_naspghan_guidelines27cy2.pdfIn PDF document text
    • http://manovina.mypressonline.com/94565664911.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380380/normal_605dad1d7fa74.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/99fd7854-07c9-4ff8-8497-e73eb721ad4b/66602402154.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e91cb7b0-16f7-49ad-8466-d205ff83bf02/how_to_lose_weight_with_apple_diet.pdfIn PDF document text
    • https://s3.amazonaws.com/jirebonudur/hrv_guide_auto.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e014abdf-ba90-4c13-becd-94021cb350d1/34120221258.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d3aef6f8-5c0a-4b6f-a7f7-9fc63914529a/aep_retirees_and_alumni.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d6541dba-d190-4553-8787-643f9096883b/black_boy_chapter_13.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ac2f34a0-cd1a-4d76-9fe4-991b146664d4/febofewodatenugele.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5fbfa16d-08ee-4251-a0ba-c161f4189408/33918076340.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ab822fd2-2665-4068-b3b5-ce08f9d5e193/how_do_i_put_music_on_my_eclipse_mp3_player_from_itunes.pdfIn PDF document text
    • https://s3.amazonaws.com/vovopafubipu/69252097345.pdfIn PDF document text
    • https://s3.amazonaws.com/xukirizugukugi/how_to_set_up_smart_bracelet_watch.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • https://savannah.gnu.org/projects/freefont/In PDF document text
    • http://www.gnu.org/licenses/In PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_006_off0002e41e.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2E41E 32160 bytes
SHA-256: a5a414531f1d118789596aa258e8f7c27318b104e6e54be6d1d3354d3fb9cd13
font_00_sfnt_off00029266.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x29266 5524 bytes
SHA-256: 941d98a0665f7515f79e7ae52a0078f87f4086234fbc63dbab7364768ce6f1ed
font_01_sfnt_off0002a543.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2A543 23480 bytes
SHA-256: 66a5a8f17f896115fb68e935a8a21472ebdbe5a685f721a5cef0dffa073707d5
font_03_sfnt_off00031f30.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x31F30 6472 bytes
SHA-256: b66f52055b5308fa7324452d5eebcfb87197f712817f226b1a9d090d64a4463a

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