Malicious PDF — malware analysis report

Static analysis result for SHA-256 254a0f85bd95b969…

MALICIOUS

PDF

77.1 KB Created: 2021-02-26 02:08:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: ea2d86ae5d235246e8583909ee0bb315 SHA-1: eb930a2a503b22dda2e8af92eff43ae66fb16ec7 SHA-256: 254a0f85bd95b96960ab2aeb6af15d0db51e4f1fd92894f404dfeed353318850
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://crophysi.ru/strik?utm_term=what+is+supply+chain+management+system PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4417040/normal_5ff517079a595.pdfIn PDF document text
    • https://bodonoweti.weebly.com/uploads/1/3/1/8/131856710/47849e778148de.pdfIn PDF document text
    • http://miiliioner.xyz/somewhere_over_the_rainbow_piano_shecty8j.pdfIn PDF document text
    • http://godevibusaxinoj.22web.org/wrong_turn_new_part_2018.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4482402/normal_5fcd340e1a154.pdfIn PDF document text
    • http://vitolebizojigok.22web.org/67718698445.pdfIn PDF document text
    • http://famozosivupiwij.sportsontheweb.net/how_to_get_share_the_wealth_cards_in_life.pdfIn PDF document text
    • https://cdn.sqhk.co/zivudasexoni/3jjXHQI/cable_calculator_online_nz.pdfIn PDF document text
    • https://pafetinavip.weebly.com/uploads/1/3/4/8/134868030/c76d7c.pdfIn PDF document text
    • https://dabusoze.weebly.com/uploads/1/3/4/5/134585091/abfe84.pdfIn PDF document text
    • http://dotuzodozo.22web.org/aiag_apqp_and_control_plan_manual.pdfIn PDF document text
    • https://cdn.sqhk.co/melipetoluf/fThiEjc/supposedly_meaning_in_english.pdfIn PDF document text
    • http://mosebuzixat.mywebcommunity.org/28749423203.pdfIn PDF document text
    • https://devudupaf.weebly.com/uploads/1/3/4/8/134880603/mezerido_rudejasizizul_vunogexugiveviz.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417983/normal_5fcc6265592c6.pdfIn PDF document text
    • http://wijasagasipode.getenjoyment.net/53005894866.pdfIn PDF document text
    • http://perevod24-card2card.site/burger_king_coupon_mai_20189iau3.pdfIn PDF document text
    • https://nifevokore.weebly.com/uploads/1/3/1/4/131437532/9c652da48e6.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://telomilabevi.epizy.com/ridudadu.pdfIn PDF document text
    • http://lavorusopanutaw.rf.gd/why_is_crime_and_punishment_important.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

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_off0000f0f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0F9 5364 bytes
SHA-256: 4d545dfd11dfc8cf542d923a7af7fc7d29270147ba546acccbcb49600f6884ee
font_01_sfnt_off0001032f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1032F 10424 bytes
SHA-256: e2fc335b2fb2d23f26fedd83b2cef6ef87301a0d261bdecfa1b9b14777bcde70

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