Malicious PDF — malware analysis report

Static analysis result for SHA-256 18e90630a91ceb93…

MALICIOUS

PDF

75.3 KB Created: 2021-04-02 02:12:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-30
MD5: df684996db1f152ba6c0a814cf95a083 SHA-1: 370ea3ab0afd8d1acee8a2d51158bb8eeb73c190 SHA-256: 18e90630a91ceb9342567578f1b1bb32c9b65b8d6a8eadf3092d2f9a73f02f19
126 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including ClamAV and an ML classifier, indicating malicious intent. It contains numerous embedded URLs, many pointing to disposable hosting, suggesting a link farm designed to redirect users to malicious content. The document body, though heavily obfuscated, contains keywords related to insurance claims, indicating a phishing or scam lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • 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.
  • 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://soxebez.ru/award?keyword=bajaj+allianz+general+insurance+company+limited+claim+form+pdf PDF link annotation
    • http://classkaod.ru/grid_photo_maker_for_instagram_mod_apk7mfrk.pdfIn PDF document text
    • http://whalesqpa.fun/anhdrido_hipocloroso_formula_quimicab5cbw.pdfIn PDF document text
    • https://tonusawojojumo.weebly.com/uploads/1/3/1/3/131384735/8362176.pdfIn PDF document text
    • http://zagejudivavi.sportsontheweb.net/navien_flow_sensor_problems.pdfIn PDF document text
    • http://robertferrell.net/45134855214emykd.pdfIn PDF document text
    • http://tejasatobes.medianewsonline.com/biology_class_9_ncert.pdfIn PDF document text
    • https://wilumixomili.weebly.com/uploads/1/3/1/4/131483065/f3175ee6.pdfIn PDF document text
    • https://xikaxuroloxo.weebly.com/uploads/1/3/1/4/131406092/1a050dc3432.pdfIn PDF document text
    • http://mavpa.fun/golds_gym_xrs_20_weight_bench_for_salezjyt2.pdfIn PDF document text
    • https://regafuraseni.weebly.com/uploads/1/3/4/6/134663643/9495695.pdfIn PDF document text
    • http://wazepewazivulil.mywebcommunity.org/the_fall_guy_season_1_download.pdfIn PDF document text
    • http://mini-cam1.club/parabolas_worksheet_algebra_2da1r2.pdfIn PDF document text
    • http://libertinemodels.com/andrew_ng_bookh4lwz.pdfIn PDF document text
    • http://coupons2020.info/75738738427lqc5z.pdfIn PDF document text
    • http://nusezuretoti.scienceontheweb.net/acquisition_and_processing_of_marine_seismic_data.pdfIn PDF document text
    • http://zarabotok.space/hello_kitty_nail_salon_download_apksbfdm.pdfIn PDF document text
    • https://fibunijir.weebly.com/uploads/1/3/0/7/130740490/105487.pdfIn PDF document text
    • http://tuduvodakep.mypressonline.com/20255673546.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/bb50642d-842e-4818-8d68-697138e8c73e/fusuba.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/643f523b-3bad-47d6-a778-401ac59e1588/44565509838.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a8562b09-6cae-478a-bc09-d9061ca2d822/how_to_work_out_compound_shapes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c8ce1e4a-580f-47c6-8672-1a4468143b26/rorudimopawojuguj.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_off0000e746.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE746 5752 bytes
SHA-256: 625f8ffb80918bf6af3a9674d3af257de5dba112b9a373e981262a62727852c5
font_01_sfnt_off0000fae0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFAE0 10660 bytes
SHA-256: 356f9c118f63767e0fe8c7fdfaa40d474914093992841b2e0e0a75ee066c2d6e

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