Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d20e94b048ef4c9…

MALICIOUS

PDF

89.2 KB Created: 2021-03-01 11:06:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: f270803eb8c0846aba49ee8d0e5f7a9c SHA-1: 3e04e14832addd5c73a1ab6ef53173e0ce90a7da SHA-256: 9d20e94b048ef4c944fa6a0d7f0de02019cdf7ea9f6f2b2fd9fe87b32beedf0e
146 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs pointing to potentially malicious domains, identified by heuristics as a link farm on disposable hosting. ClamAV detection and ML classification strongly indicate malicious intent, likely for phishing or malware distribution. Although no scripts were extracted, the document's structure and embedded links suggest it's designed to redirect users to external, untrusted content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • QR-code redirect lure medium SE_QR_LURE
    Document instructs the user to scan a QR code with a phone — consistent with QR phishing, but also common in legitimate documents
  • 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://fokemale.ru/wb?keyword=d%20and%20d%20delights%20menu%20generator PDF link annotation
    • https://cdn.sqhk.co/jukowejazus/WgfidnN/merge_hexagon_block_shoot_2048_hexa_puzzles.pdfIn PDF document text
    • https://cdn.sqhk.co/lopijikuvi/bgeW0ib/92257677577.pdfIn PDF document text
    • https://disadoxamegipu.weebly.com/uploads/1/3/4/5/134527150/tekuwebo-zavolakamexofaw-matekedix-tudevosi.pdfIn PDF document text
    • https://zewekoli.weebly.com/uploads/1/3/5/9/135966642/wawip-nirega.pdfIn PDF document text
    • http://edalovert.xyz/ielts_speaking_practice_test_with_answersbpb38.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4474218/normal_602a0c131b32f.pdfIn PDF document text
    • http://hookup154.site/boris_and_the_dark_survival_free_apkuhugq.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4367303/normal_5fca7aa501af2.pdfIn PDF document text
    • https://cdn.sqhk.co/surodamiz/6qqjfib/54944195290.pdfIn PDF document text
    • https://teliwunamadawab.weebly.com/uploads/1/3/1/3/131381891/b36e579ea6f6.pdfIn PDF document text
    • https://cdn.sqhk.co/xovujiroveg/EhcsggF/real_piano_game_for_pc.pdfIn PDF document text
    • https://wefogazasu.weebly.com/uploads/1/3/4/8/134880183/b139b714.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414502/normal_603c2d7d31e26.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4406223/normal_6023c85d2e9cf.pdfIn PDF document text
    • http://supermagazforsale1.xyz/24704066008j1g0p.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403414/normal_601f117ccbe12.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4479691/normal_5ff8a25a134f9.pdfIn PDF document text
    • https://gozaxuvo.weebly.com/uploads/1/3/4/6/134612917/34db0505f19f0ad.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tupanukaxigazit.epizy.com/very_sad_punjabi_song_ringtone.pdfIn PDF document text
    • http://vijanemafe.rf.gd/rocket_propulsion.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001161b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1161B 5240 bytes
SHA-256: 8ac5f7e2fc20a5f3f679f23175eab3dfb030173f33fdc8307630bbc2f63fe5c1
font_01_sfnt_off000127bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x127BD 2116 bytes
SHA-256: 8db65adc699bed2ed4e99b174e414cace916d9ae25f4e5597e3d94de4d1667c8
font_02_sfnt_off00013165.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13165 11212 bytes
SHA-256: db629016f5cc5dcf2debdb4e225ac39826ead3c8d63a1a90e3e91204c45a96ca

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