Malicious PDF — malware analysis report

Static analysis result for SHA-256 c9e1548b701e526a…

MALICIOUS

PDF

76.3 KB Created: 2021-04-19 23:45:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: e8213f02673d98df08a4ccb5eeaea41d SHA-1: 10d4161291c645c4001221e29f28d14daef24a46 SHA-256: c9e1548b701e526a114610b78f9612f075c84ab144bff5e05546191c2c754a8e
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-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://dugedepap.ru/strik?utm_term=red+cross+lifeguard+recertification+training PDF link annotation
    • http://latomixoxa.iblogger.org/how_do_i_know_if_my_dyson_v10_battery_needs_replacing.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368956/normal_6060119a233ae.pdfIn PDF document text
    • https://cdn.sqhk.co/dediwifime/d2aihFU/sample_business_plan_for_a_small_restaurant.pdfIn PDF document text
    • http://wixosefimaba.scienceontheweb.net/nerisuzokam.pdfIn PDF document text
    • https://cdn.sqhk.co/tumowara/jihbxha/48933483808.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4470687/normal_60015e0493e47.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4380403/normal_5fffd963023a4.pdfIn PDF document text
    • https://cdn.sqhk.co/jerivudofin/htZCr6d/wormax._io_hack_script.pdfIn PDF document text
    • http://dojemop.mywebcommunity.org/omron_blood_pressure_monitor_model_hem-711acn.pdfIn PDF document text
    • http://lorakuze.sportsontheweb.net/marirunopipefiwa.pdfIn PDF document text
    • https://cdn.sqhk.co/tinolaseja/Fhbnr72/hotdog_evolution_clicker_games.pdfIn PDF document text
    • https://cdn.sqhk.co/pugirunosamo/cgihcha/51069633483.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://93bb5028-8b17-4c47-8ab9-f46a024b0e86.filesusr.com/ugd/041612_8c1e901396d644fcb04625881d3d46f2.pdf?index=trueIn PDF document text
    • http://podakeluri.rf.gd/2021_lexus_is_350_f_sport_invoice_price.pdfIn PDF document text
    • https://b81e1767-bb0d-4562-9f98-cfef66859bb1.filesusr.com/ugd/b48b60_5af8df4f762343818670419470e71b73.pdf?index=trueIn PDF document text
    • http://lokutoge.rf.gd/64026202872.pdfIn PDF document text
    • http://jufofokisib.epizy.com/41486066744.pdfIn PDF document text
    • http://xanedemu.onlinewebshop.net/bajaj_finance_loan_application_form.pdfIn PDF document text
    • https://c20a02f1-eded-46de-afbf-2d7328e03b26.filesusr.com/ugd/c6fd25_93048c3f0d794a028f226759260f6362.pdf?index=trueIn PDF document text
    • http://bupelasupur.epizy.com/yamaha_psr_e253_prezzo.pdfIn PDF document text
    • https://4771f60c-9559-4da0-84b6-7e0db70f7697.filesusr.com/ugd/f9d4cd_76701e0c03c34fe3a1297f52fe66ea9a.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eba0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBA0 5196 bytes
SHA-256: 99c2f188ae1eaee987806e9db42ee485ba390d562846612cc94b4e912fb1544c
font_01_sfnt_off0000fd62.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD62 11296 bytes
SHA-256: 5b139db528f251ae8e19bf4ff9ad46f6e2b0c03fadd9b8a4b5ef02ce5250d2d7

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