Malicious PDF — malware analysis report

Static analysis result for SHA-256 748785c3f52899fc…

MALICIOUS

PDF

82.0 KB Created: 2021-03-22 00:13:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: cf5feda6ecd332dd0e5d45455073c141 SHA-1: 8baa4dc76194408f9259e44ac5acc1bd1b0ca4af SHA-256: 748785c3f52899fc4ef41a05b183d015c6493ff9048e6c1aec4da2c3da120f06
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 0.9992

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://botokaw.ru/wix?keyword=nascar+fantasy+live+picks+kansas PDF link annotation
    • https://cdn.sqhk.co/kataregulu/cridPLe/83100949846.pdfIn PDF document text
    • https://bulabameworiw.weebly.com/uploads/1/3/4/0/134096114/6955911.pdfIn PDF document text
    • https://demuvejujewik.weebly.com/uploads/1/3/4/0/134042515/vivusid-sodotuv-sudeg.pdfIn PDF document text
    • http://midoponivejumod.22web.org/dukopagukogep.pdfIn PDF document text
    • https://bemujegifa.weebly.com/uploads/1/3/5/3/135312506/7585043.pdfIn PDF document text
    • https://cdn.sqhk.co/kigoxeni/jhbqifK/rujexaxugodupizugotejir.pdfIn PDF document text
    • https://cdn.sqhk.co/jolodovi/rhfhgXc/smart_10_balance_wheel_charger.pdfIn PDF document text
    • https://duzareledibasa.weebly.com/uploads/1/3/4/8/134890493/dcca435ef1318bf.pdfIn PDF document text
    • https://cdn.sqhk.co/zovigobut/hdJSgi5/24701863301.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/tapelu/66885741063.pdfIn PDF document text
    • http://vewamekigobuzuw.epizy.com/daydreaming_reading_answer.pdfIn PDF document text
    • http://jufofokisib.epizy.com/arcgis_free_full_version.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ac56182d-de71-4b73-9d27-89ee1128226f/fidejidirikabibemol.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7b25441c-d90a-4cf5-8b47-edaf37cba7bc/28602579486.pdfIn PDF document text
    • https://s3.amazonaws.com/jeduzizonox/toro_electric_weed_eater_string_size.pdfIn PDF document text
    • http://gajewokutonixa.rf.gd/73802934400.pdfIn PDF document text
    • https://s3.amazonaws.com/betefowubevat/62496063935.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/92712911-7375-4276-9149-bad0bbf540bf/tezadelebexomakagiba.pdfIn PDF document text
    • https://s3.amazonaws.com/dorobukasawituw/calculadora_integral_indefinida_online.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bac2916e-7ddd-4031-a12f-00a4be2436cc/71246415882.pdfIn PDF document text
    • http://fosadexovoz.epizy.com/7021490984.pdfIn PDF document text
    • https://s3.amazonaws.com/nilafafakem/used_troy_bilt_lawn_mower_for_sale.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d5641ae7-9f73-4cc6-9f32-75cab1f800e4/steps_for_completing_the_square_worksheet.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_off0001045f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1045F 5204 bytes
SHA-256: 96e417df7544b39f2392a3a54ec47032f299221973f4385b25f2a9626ba9ddc5
font_01_sfnt_off0001163f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1163F 10572 bytes
SHA-256: eca2afd4fb6aa55ab01df5c480e77dbcdc462349fb9500b5e9e0a0a0e46a9de5

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