Malicious PDF — malware analysis report

Static analysis result for SHA-256 1a0f95244eb10709…

MALICIOUS

PDF

78.9 KB Created: 2021-03-20 19:16:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: dccd8f7b15ff739488d50542b7700610 SHA-1: b4745e7fb853417e54b80f8866b218eb87d31a61 SHA-256: 1a0f95244eb10709e5f4bf498849505cf9c868e87429e1743b288c3a924d69a5
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF document contains multiple embedded URLs, with one specifically appearing to be a lure for government job applications. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. The presence of external URIs and a link farm heuristic further supports this, suggesting the document is designed to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://pelibifir.ru/123?utm_term=adalet+bakanl%25C4%25B1%25C4%259F%25C4%25B1+memur+al%25C4%25B1m%25C4%25B1+ba%25C5%259Fvuru+formu+2019 PDF link annotation
    • http://nesorus.mywebcommunity.org/risegemifejizokibiledejow.pdfIn PDF document text
    • https://cdn.sqhk.co/mikitikotak/fTAgiVG/dorod.pdfIn PDF document text
    • http://erogan-columbia.site/614154189219dae1.pdfIn PDF document text
    • http://natlegend.space/15605216866ogxsa.pdfIn PDF document text
    • http://lapivakop.getenjoyment.net/simple_present_reading_comprehension_worksheets.pdfIn PDF document text
    • https://viwefinorix.weebly.com/uploads/1/3/0/8/130813514/2307032.pdfIn PDF document text
    • https://rabiwibunefa.weebly.com/uploads/1/3/4/7/134747284/ganaziku-ziladuleduvagav.pdfIn PDF document text
    • https://ziziwatir.weebly.com/uploads/1/3/4/7/134713039/bapelowuto_pivaziwitutiz_nirazukoxoz_bebewevinex.pdfIn PDF document text
    • https://cdn.sqhk.co/feziwetesene/1Yjb3gd/family_pinball_nes.pdfIn PDF document text
    • https://popajilosofov.weebly.com/uploads/1/3/0/7/130776408/2203333.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4380230/normal_5ffe27ec733a7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369930/normal_5ff320b70b932.pdfIn PDF document text
    • https://letazofuwukuge.weebly.com/uploads/1/3/4/8/134869061/jixiv.pdfIn PDF document text
    • https://jonurimexiv.weebly.com/uploads/1/3/4/3/134321783/gutopu-mesoxajaw.pdfIn PDF document text
    • https://bupuzufemu.weebly.com/uploads/1/3/1/4/131452870/15b218feb.pdfIn PDF document text
    • http://cashfree.store/89749688502tno67.pdfIn PDF document text
    • http://1xbet-football.fun/75198950702nmna8.pdfIn PDF document text
    • https://cdn.sqhk.co/gakilofod/iia0Hq3/dog_fighting_facts_australia.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zorikeroz.onlinewebshop.net/canon_mp240_error_code_e5.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_off0000f035.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF035 6120 bytes
SHA-256: f08638ef295ee500fd62ae32877cc42c423d0ba364d975d2e8c8183f8a42b26d
font_01_sfnt_off000104f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x104F6 12588 bytes
SHA-256: 8ddb7ca2f918387a2427016d6b3c430d1443b9df2180e9deabfebd718685347b

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