Malicious PDF — malware analysis report

Static analysis result for SHA-256 d418edcc32e3899c…

MALICIOUS

PDF

81.8 KB Created: 2021-03-28 21:35:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: d50ce31e7665b404f7b57052f799c195 SHA-1: cedb9a15a9ee8813120ef20f21c7bc4c12f6271f SHA-256: d418edcc32e3899c78b80628dd3a3d8fc6d883009d60a07ec6af9e7d3924b8a2
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

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 0.9997

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 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://xajibur.ru/award?keyword=arsene+lupin+gentleman+cambrioleur+pdf PDF link annotation
    • http://instapriz365.online/sultan_the_game_mod_apk_revdl1spiq.pdfIn PDF document text
    • http://servempieza.site/relogogaoyxaw.pdfIn PDF document text
    • http://webcam-model.online/centurion_5000_watt_generator_oil_changexripa.pdfIn PDF document text
    • http://pollsexpert.com/jilavu9x9jl.pdfIn PDF document text
    • http://triple-doska6.club/what_hermeneutics_means_in_the_bible40ni6.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/jemisajoda/lajikixovu.pdfIn PDF document text
    • https://bdc3fad0-85dd-4e34-85f7-620d54d4ff6f.filesusr.com/ugd/10cedf_6e6c9011920f460f911611d566f95356.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/limepusotanal/98048026127.pdfIn PDF document text
    • https://s3.amazonaws.com/kefiperizonofu/character_certificate_form_for_students.pdfIn PDF document text
    • https://27158da8-170d-48ca-a528-b8ced62fe517.filesusr.com/ugd/9fc8c3_40a26f6d96094c9f9318a842b01ba070.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/49704c41-76d1-4ff2-9ebd-fdaa2fe2bf6f/majoras_mask_3ds_walkthrough_zeldamaster.pdfIn PDF document text
    • https://1fa67a36-2e8b-44cc-a955-751d80433762.filesusr.com/ugd/d85e51_8b066fc51a7b4e8b8b69b80fc22b1e34.pdf?index=trueIn PDF document text
    • https://09972071-4174-499b-90b1-de3619f59f53.filesusr.com/ugd/d1c05f_b2b1f730134045d0bb7911367dba7afb.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/juwofuxufijup/date_range_pandas_format.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6867a746-12cc-4c86-86a3-607d9d6d1a8a/cradle_to_cradle_meaning_in_spanish.pdfIn PDF document text
    • https://70fbc5f3-53e4-4072-9ff7-a5862d19847b.filesusr.com/ugd/bb3bf9_ffeba71ca60549d6a785f92d8202ea80.pdf?index=trueIn PDF document text
    • https://a513df27-8ea1-49e5-9b48-af726a3c99b5.filesusr.com/ugd/c567c1_ea8100398035404091068ff18c0306aa.pdf?index=trueIn PDF document text
    • https://2c8134a4-d865-4da1-8961-c755d7242105.filesusr.com/ugd/6dcf04_bdacb38ab96a4ce6ae269def2d1b7760.pdf?index=trueIn PDF document text
    • https://d1897088-ef6e-4b60-8303-910b4b551fc1.filesusr.com/ugd/4cfbbd_777afc617f184d04b6a43740a874f591.pdf?index=trueIn PDF document text
    • https://a4758657-6aaa-4003-b0f6-1957e800abfd.filesusr.com/ugd/70c1f8_dd9d109416634785a2c11ca02cd68049.pdf?index=trueIn 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_off0000ffc4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFFC4 5604 bytes
SHA-256: 8fd576f7ddea0f50a6493fdfc2763a88ca4f2824f23f0812f9aca892d66d0f27
font_01_sfnt_off000112b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x112B8 11592 bytes
SHA-256: 0e092666fc4b9a216a09bc295f5bf14b86ff58b37a2d31dd9bc711a97d8cc8f9

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