Malicious PDF — malware analysis report

Static analysis result for SHA-256 4eab789988ac19cd…

MALICIOUS

PDF

119.5 KB Created: 2021-03-04 00:02:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: c78955e7be6e5b1d8cd935599a5e6e89 SHA-1: 4b361bba00e96fe9b598c603a165597c0f7b019c SHA-256: 4eab789988ac19cd946d81399e6c3364ca6a921aa274ca4e9093882b83d356b2
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and by an ML classifier as malicious. It contains numerous embedded URLs, many pointing to disposable domains or free hosting services, indicative of a link farm designed to redirect users. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' specifically identifies this pattern. While no scripts were explicitly extracted, the presence of embedded URLs and the overall structure suggest an attempt to direct users to malicious content, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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://soxebez.ru/award?keyword=the+road+cormac+mccarthy+movie+online PDF link annotation
    • https://cdn.sqhk.co/jujijodop/mYhchbQ/i_m_bored_chat.pdfIn PDF document text
    • https://tatonipek.weebly.com/uploads/1/3/4/8/134874136/742121.pdfIn PDF document text
    • http://miiliioner.xyz/lapozamigx2f.pdfIn PDF document text
    • https://severuzilun.weebly.com/uploads/1/3/4/7/134710190/59d4bc7.pdfIn PDF document text
    • https://sozusodugalonus.weebly.com/uploads/1/3/4/6/134614171/5332444.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4482403/normal_5fc94186d78ff.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368949/normal_600681b528090.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481834/normal_603472a8ded48.pdfIn PDF document text
    • https://xowavexinoj.weebly.com/uploads/1/3/1/4/131408618/2334104.pdfIn PDF document text
    • https://cdn.sqhk.co/videgogaf/nJjengg/the_emerald_maiden_symphony_of_dreams_full_apk.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4469104/normal_6022d569af1cb.pdfIn PDF document text
    • http://kuvuradivikosef.iblogger.org/weraporusokegato.pdfIn PDF document text
    • https://ketizinuxemuwiw.weebly.com/uploads/1/3/0/9/130969628/wugesatopurufigepe.pdfIn PDF document text
    • http://bufo.online/4515711076h7ulv.pdfIn PDF document text
    • http://sun-italy.space/64751449775c8ggt.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://rupewilalefapok.rf.gd/agadbam_marathi_movie_song.pdfIn PDF document text
    • http://sanemogoxidiwus.epizy.com/rapenivojavine.pdfIn PDF document text
    • http://dovudegumigisaw.rf.gd/kilupivedexivetel.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00016550.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16550 4200 bytes
SHA-256: 8ed8eeceddb8a3982114c3d8afc6fbe697c2fa81ab236db6352b45e9cc472696
font_01_sfnt_off00017420.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17420 4900 bytes
SHA-256: e999b380173aa5a9ec38067615288b8c1392b245596fc793eca5175a481b9918
font_02_sfnt_off000184a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x184A8 10812 bytes
SHA-256: 29d34e86b6a503e1c439c5075a597803db3f186baaf9d4e72c4b1202aadf569d
font_03_sfnt_off0001a9cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1A9CC 16320 bytes
SHA-256: f847b95861e2d37df2cbbf1ea0bc2b2c9982f89aa00b293ac9e484f330779e3f
font_04_sfnt_off0001bf60.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1BF60 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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