Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe00ccc80814ffdd…

MALICIOUS

PDF

71.9 KB Created: 2021-04-04 22:29:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 4485e12d5bd033efe9fb2ab08977daaf SHA-1: 13d6fefd394e10d7312604d5b7698e010a5ac503 SHA-256: fe00ccc80814ffdd0980592e33c63d832df38135f08daf347992a8a0bc339c2f
186 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

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 0.9993

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://vilenefex.ru/123?utm_term=youth+catcher%2527+s+mitt+size+guide PDF link annotation
    • http://judupebe.getenjoyment.net/active_voice_and_passive_voice_rules_in_gujarati.pdfIn PDF document text
    • https://xagomutub.weebly.com/uploads/1/3/4/3/134321984/c44ee92d3a.pdfIn PDF document text
    • http://retamos.mygamesonline.org/59577458670.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380090/normal_60397cbde9bf5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404121/normal_5fe9fe371ba12.pdfIn PDF document text
    • http://xakidofe.sportsontheweb.net/96881158413.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4426828/normal_5fcefaf0ab795.pdfIn PDF document text
    • https://feredelulewijun.weebly.com/uploads/1/3/2/6/132681536/3951175.pdfIn PDF document text
    • https://xunowarusaki.weebly.com/uploads/1/3/4/3/134371630/7ae354101d3.pdfIn PDF document text
    • https://tozirodewekopax.weebly.com/uploads/1/3/1/4/131453541/7813459.pdfIn PDF document text
    • http://poruzotosiku.getenjoyment.net/zx_spectrum_games_code_club.pdfIn PDF document text
    • https://megigoxifiwovom.weebly.com/uploads/1/3/0/7/130740625/02dbe7f1bc8d.pdfIn PDF document text
    • https://suxavumopej.weebly.com/uploads/1/3/3/9/133999634/piledojepigigiseg.pdfIn PDF document text
    • https://zavurebugefogoj.weebly.com/uploads/1/3/4/3/134397626/1856df6ef78.pdfIn PDF document text
    • https://polaposegit.weebly.com/uploads/1/3/4/5/134591324/ee144733f.pdfIn PDF document text
    • https://kizinuraximi.weebly.com/uploads/1/3/4/4/134446503/foputi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366630/normal_605ab2c8a034a.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/fotojipifuzitul/zoguditis.pdfIn PDF document text
    • http://vezoxonu.epizy.com/bunnings_flooring_sheets.pdfIn PDF document text
    • https://s3.amazonaws.com/zifozujiwi/hamilton_beach_68330n_4-quart_automatic_ice-cream_maker_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/divelatoxa/71504315892.pdfIn PDF document text
    • http://ravetedenafow.rf.gd/candle_making_machine_price_in_ethiopia.pdfIn PDF document text
    • http://bizuwututemi.rf.gd/speak_english_fluently.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_off0000d962.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD962 5368 bytes
SHA-256: e1b5923e1429138d75834e3c14545d6c499e72d91b68566589229dc0cb2c5f2b
font_01_sfnt_off0000eb88.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB88 10876 bytes
SHA-256: 907bb90e989ed7fa907e24bde0f37f6402a983201f8500aefabb1b8d49ccf759

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