Malicious PDF — malware analysis report

Static analysis result for SHA-256 62f149e8cdcedd6e…

MALICIOUS

PDF

80.0 KB Created: 2021-03-13 21:10:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 86edef19538935581823e577a9f9e9b0 SHA-1: 18d83f6b7eea8c499848f4376e775377e18d1739 SHA-256: 62f149e8cdcedd6e7021bf670173d56f5ddb23980474561c7038c4da8242e259
156 Risk Score

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 a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://kuzutuzo.ru/123?utm_term=netto+bijtelling+berekenen+formule PDF link annotation
    • https://tanatomunedasov.weebly.com/uploads/1/3/5/3/135325499/sojitidejowape.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403415/normal_602e61121248a.pdfIn PDF document text
    • https://cdn.sqhk.co/rurewemanavi/AWigVQb/finanelovulubobopudakut.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4466659/normal_5ffc957114e7a.pdfIn PDF document text
    • http://juvojekeno.iblogger.org/4807110291.pdfIn PDF document text
    • https://cdn.sqhk.co/keliziniw/uzhjjcN/zopesomitazapoduxarudew.pdfIn PDF document text
    • https://cdn.sqhk.co/xiteduva/gfStxha/big_bang_theory_theme_song_full_lyrics.pdfIn PDF document text
    • https://gajodiwu.weebly.com/uploads/1/3/4/0/134042407/8540281.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4462066/normal_5fee658833b97.pdfIn PDF document text
    • http://xubakonuxejebip.iblogger.org/renemavu.pdfIn PDF document text
    • https://netulomite.weebly.com/uploads/1/3/2/8/132814473/mefowuburisiz.pdfIn PDF document text
    • https://cdn.sqhk.co/furabafezuse/theM3kG/heropanti_quran_video.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/towutoginadivu/minowezixukutol.pdfIn PDF document text
    • https://s3.amazonaws.com/dixaleko/business_communication_essentials_6th_edition_free.pdfIn PDF document text
    • https://s3.amazonaws.com/bulalowisu/respiratory_acidosis_alkalosis.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1650cb57-7b86-4c18-abcb-9b02d9a50205/shark_euro_pro_sewing_machine.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d2e3c8a3-8181-482e-ba69-2a19705d5a3d/zmodo_wireless_camera_app.pdfIn PDF document text
    • https://s3.amazonaws.com/dovulavavo/best_friend_copy_and_paste.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/84dbee7f-d845-46a6-a9d7-3a3c151ad6ed/how_to_change_batteries_in_moultrie_game_camera.pdfIn PDF document text
    • http://zamoguwudegovo.rf.gd/73647958828.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b0ff2354-a023-4017-9f78-1cc79ac719e4/viwigazivefanonemago.pdfIn PDF document text
    • http://mujibise.epizy.com/the_nature_of_genius_mini_ielts_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/22fec0ba-ef8d-48c6-a4b0-8e53d34c30ec/71812167526.pdfIn PDF document text
    • http://viziboxovuw.rf.gd/things_fall_apart_chapter_5-7_summary.pdfIn PDF document text
    • https://s3.amazonaws.com/xefejevife/easy_vegetarian_dinner_uk.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_off0000fa6c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA6C 4948 bytes
SHA-256: 13efffcd3a64ccf52e807d2296598a21ec1be30b6bb247fc20ae7729c2a4abec
font_01_sfnt_off00010b42.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B42 11596 bytes
SHA-256: 9c8df24225a3c13d2cd2b2f0daea5e38dff901e6ef80c8de76649e93c7f7a0a1