Malicious PDF — malware analysis report

Static analysis result for SHA-256 3cfc7ebb337cce49…

MALICIOUS

PDF

66.7 KB Created: 2021-04-27 16:19:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: caeb9d7a5a4df1d250118800afb53f37 SHA-1: e051fba1cda4e634f66d3b5a7bc0ad338e813f7b SHA-256: 3cfc7ebb337cce49f03a418d698c5b313f50f20afe748ad99249a9a522004533
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was flagged as malicious by a machine learning classifier and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a phishing or malware distribution site. The document body, though partially corrupted, suggests a lure related to product searches, aiming to trick users into clicking the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://baarspo.ru/strik?utm_term=united+colors+of+benetton+jackets+mens PDF link annotation
    • https://cdn.sqhk.co/tiruweti/ajhgjxs/happy_new_year_song_2019_video.pdfIn PDF document text
    • https://cdn.sqhk.co/dijogiper/jb8igge/83967738701.pdfIn PDF document text
    • https://cdn.sqhk.co/jopubelo/chfjfpr/wrong_turn_4_trailer.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4449965/normal_5fddc4c8e9fb0.pdfIn PDF document text
    • https://cdn.sqhk.co/wuxidubez/hhiiwha/xugegafutadotuwugu.pdfIn PDF document text
    • https://cdn.sqhk.co/tamejenonisi/iahalaS/hello_neighbor_hide_and_seek_apk_softonic.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465543/normal_5fdc4e9df365a.pdfIn PDF document text
    • https://cdn.sqhk.co/butemobe/gteckgf/rpg_sound_mixer_cracked.pdfIn PDF document text
    • http://letilemugemin.66ghz.com/38554305090.pdfIn PDF document text
    • http://fusobilel.iblogger.org/tippmann_a5_e_trigger_programming.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/6f4222e2-5b7a-4853-ba8b-99ca56311015/ludul.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8ec50cf1-3a4b-4bc7-95ed-85c6c09ea19a/32153688778.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c8ce3f3c-fdfd-445b-bb00-4fb86fc15793/gumujitogofesepe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3f07aa59-8458-485f-8b62-1959410cbf99/context_clues_worksheets_multiple_choice_8th_grade.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/42d4a41b-8c5b-4b01-96b5-3f4dec64ac4b/98501953269.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c729d109-fb4b-44e8-9acb-ec5093365868/guseter.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/efdd3eed-b71d-44a1-863c-ac31c1ddfd7d/how_to_use_google_workspace_for_project_management.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_off0000c7ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC7EA 5436 bytes
SHA-256: f85d5be4cd919b02ffada9b1778618d26b7007f59e325b217284406cd04f0ffb
font_01_sfnt_off0000da61.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA61 10288 bytes
SHA-256: f789c16db7b364a434aa6f17eb2ce278ebf21f50171c6859637617b48c52c6c3

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