Malicious PDF — malware analysis report

Static analysis result for SHA-256 214328c96f89c4c3…

MALICIOUS

PDF

77.0 KB Created: 2021-06-02 19:56:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 932d7ae1689f2223e99d93816db4606e SHA-1: 931c11a4274ffcaff150bd03296187c197726e19 SHA-256: 214328c96f89c4c3bebcb875707ceb7b8a126c0195626f2dd36b88c5956d9d15
186 Risk Score

Malware Insights

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

The PDF contains numerous external links, many pointing to disposable hosting, suggesting a link farm designed to redirect users. The ClamAV detection and ML classifier strongly indicate malicious intent, likely for phishing or malware distribution. While no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of malicious activity.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 6

  • 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.
  • 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.
  • 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://ketchas.ru/pbw?utm_term=chariots+of+fire+easy+piano+sheet+music+free PDF link annotation
    • https://mekivigabu.weebly.com/uploads/1/3/4/0/134096936/safifasudam.pdfIn PDF document text
    • https://zatemolepilud.weebly.com/uploads/1/3/6/0/136085897/lepabi.pdfIn PDF document text
    • https://xopoloxunevagig.weebly.com/uploads/1/3/1/4/131406528/wedir_kepizo_lubujasaxu.pdfIn PDF document text
    • https://ridakikasidom.weebly.com/uploads/1/3/0/7/130739592/5d9604e9edd.pdfIn PDF document text
    • https://budaxopam.weebly.com/uploads/1/3/4/7/134711784/9160a829a60d.pdfIn PDF document text
    • https://xezafeliwi.weebly.com/uploads/1/3/1/3/131381443/xosobe-movorozoturibut-denenelat-jezotevodu.pdfIn PDF document text
    • https://kubimivigiv.weebly.com/uploads/1/3/4/3/134314132/nivutikesezejojejas.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/762bfc09-c894-42cc-bba7-5dcb1f304436/xoxekefepigegexojopuse.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/86305ee7-5a03-478a-a60d-785b17194979/data_abstraction_and_problem_solving_with_java_walls_and_mirrors.pdfIn PDF document text
    • http://tisowowuduwe.pbworks.com/f/o_que__sistema.pdfIn PDF document text
    • http://zikupuzajix.pbworks.com/w/file/fetch/144479010/pawuvubomojatewibar.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1c33c3d0-e129-4ff7-a4ff-da514f04b78a/zudedalamiwefekozol.pdfIn PDF document text
    • http://luwivaj.pbworks.com/w/file/fetch/144517719/15105691252.pdfIn PDF document text
    • http://xedidovetaw.pbworks.com/f/34747599122.pdfIn PDF document text
    • http://funinupun.pbworks.com/w/file/fetch/144416970/phim_nht_bn_hay_v_tnh_yu_thy_tr.pdfIn PDF document text
    • http://beratirupo.pbworks.com/f/headway_english_b1_students_book_pack.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dda74397-5524-4ed5-88c4-084778167539/how_to_setup_universal_remote_to_magnavox_tv.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/32d471c3-6a98-4783-9a03-7180f5a944ab/wuzemupisere.pdfIn PDF document text
    • http://nowefuro.pbworks.com/f/materi_manasik_umrah.pdfIn PDF document text
    • http://wiliser.pbworks.com/w/file/fetch/144464457/what_zodiac_sign_matches_well_with_cancer.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6bcd6f73-a95b-4d9e-8d39-f4b3def87eaa/what_are_the_7_p_and_4c_in_marketing.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9e4b64b4-374f-49fe-8593-0a593d2dd749/honeywell_th8110r1008_installation_manual.pdfIn PDF document text
    • http://bawamotijeku.pbworks.com/w/file/fetch/144468138/rupuwedumejiluwemu.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_off0000e1c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1C8 5232 bytes
SHA-256: 1e7a4c7c82e6bc9f8b8cc6adf81c4cf37c1ef67ee06c49209a04bdb425321f8f
font_01_sfnt_off0000f374.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF374 10880 bytes
SHA-256: 9c1b0483231c317209dc12ebf6dcb8e2359c51d90ae60ec8716c2d3f391e31c9
font_02_sfnt_off00011864.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11864 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

Open this report in the interactive analyzer, or submit your own file for analysis.