Malicious PDF — malware analysis report

Static analysis result for SHA-256 92753e174b334ea3…

MALICIOUS

PDF

71.0 KB Created: 2021-03-17 09:56:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: b930c8bce060b3fce0887054890616df SHA-1: 5323602021f8dae848e6643ea18581de62c6bf1a SHA-256: 92753e174b334ea35eb6012d0a5ae128d2b6b2e6601c14a2fc324c6d7b7e9dec
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 0.9993

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://druttle.ru/strik?utm_term=homelite+blower+carburetor+rebuild+kit PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4422382/normal_5fd1dc9b1585b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448720/normal_604ec71ebafb9.pdfIn PDF document text
    • http://mikazuxo.mypressonline.com/usgs_map_projections.pdfIn PDF document text
    • http://redpandarecycling.com/is_speed_queen_washer_worth_the_moneykj475.pdfIn PDF document text
    • http://fesurowejo.mywebcommunity.org/tegika.pdfIn PDF document text
    • http://xesapuwax.mywebcommunity.org/fixux.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446770/normal_60257d7d3f58e.pdfIn PDF document text
    • http://nonly.xyz/54982328807k55x0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381964/normal_601430bb58e3a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4452382/normal_602115f8c4902.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/magapeguwabe/barron_s_gre_complete_word_list.pdfIn PDF document text
    • https://s3.amazonaws.com/rupatojuko/4294645114.pdfIn PDF document text
    • https://s3.amazonaws.com/widetunipet/bajirao_mastani_song_raagsong.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/80dd7be9-6fec-4ffe-a683-58d22b6f028e/warrior_cats_games_roleplay.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d6a5b3c2-ddea-43fe-8ab2-255c794edba0/how_to_install_safety_1st_grow_and_go_car_seat_front_facing.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6e6fde55-28a8-4cbe-aa08-4d5f86db89f1/zuvewujutakokadanadenolid.pdfIn PDF document text
    • http://roxujewov.myartsonline.com/17669793376.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/71f7affb-b6ca-4f7e-a501-4e36a5dcf018/can_you_succeed_with_adhd.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/25a88bae-7152-4a88-a891-97c2c17568cb/panosoriselolonot.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/969ead75-4cb2-4f34-aa57-5c55934a3539/why_is_my_freezer_door_not_sealing.pdfIn PDF document text
    • http://kulebosux.myartsonline.com/nisagami.pdfIn PDF document text
    • https://s3.amazonaws.com/luxelula/spanish_grammar_book_free.pdfIn PDF document text
    • https://s3.amazonaws.com/nolarifaforuxop/kasavar.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_off0000d8e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8E8 5164 bytes
SHA-256: c46de84985ee619f50e49976cc16b339c0943421a6410f35a9553685c859411e
font_01_sfnt_off0000ea6d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA6D 9968 bytes
SHA-256: 55963d6bae5068b8c9fd6d9fee10af62430b79e4aab1a9a3cc08f55af2d38033

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