Malicious PDF — malware analysis report

Static analysis result for SHA-256 9c7719087ddda9ef…

MALICIOUS

PDF

91.5 KB Created: 2021-05-14 14:23:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: d910ff10cfa87af6cc23abbe63b13b01 SHA-1: ee7311733b676f4da0a0a695dcd4858dc893f4e5 SHA-256: 9c7719087ddda9ef452cf723d08591bdbfeb6ddbdcd7406dbabf6312391eb413
206 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, many pointing to disposable domains, which is characteristic of link farms or phishing lures. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were directly extracted, the PDF structure and embedded URIs suggest it's designed to redirect users to potentially malicious content, likely as part of a phishing or SEO manipulation campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9951

Heuristics 7

  • 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.
  • QR-code redirect lure medium SE_QR_LURE
    Document instructs the user to scan a QR code with a phone — consistent with QR phishing, but also common in legitimate documents
  • 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://jacksth.ru/strik?utm_term=snow+white+with+the+red+hair+season+3+episode+2+english+dub PDF link annotation
    • https://cdn.sqhk.co/remuzebepilu/hHbqhdd/bug_s_life_2_trailer.pdfIn PDF document text
    • http://reduslimitaly-official.site/what_is_the_main_theme_of_the_loraxv063m.pdfIn PDF document text
    • https://zumasugi.weebly.com/uploads/1/3/4/8/134864891/wobiwofugetokawo.pdfIn PDF document text
    • http://komarovskii.xyz/pisevubijuzowuvisajire18ew3.pdfIn PDF document text
    • https://cdn.sqhk.co/woleparos/c31haDF/zovunu.pdfIn PDF document text
    • http://bepifukikuku.mygamesonline.org/96868719465.pdfIn PDF document text
    • https://cdn.sqhk.co/rapekerokemo/ggfifcO/sulaxesiweg.pdfIn PDF document text
    • http://jarowulizose.sportsontheweb.net/tudutabaxolew.pdfIn PDF document text
    • https://cdn.sqhk.co/fonixoligem/ibQiaSJ/fluid_live_wallpaper_iphone_se_2020.pdfIn PDF document text
    • https://jujamepusa.weebly.com/uploads/1/3/2/8/132815903/vapugebegij.pdfIn PDF document text
    • https://lagomumudalo.weebly.com/uploads/1/3/2/6/132681699/622609190919c0.pdfIn PDF document text
    • http://presalle.xyz/sri_vishnu_sahasranamam_path_in_hindiutpa0.pdfIn PDF document text
    • http://newyearshop.site/guwoxinusakanijasuboemj7.pdfIn PDF document text
    • https://cdn.sqhk.co/pixazizaze/vRiejhx/bad_hair_day_funny_meme.pdfIn PDF document text
    • http://siwupojotuj.getenjoyment.net/41862526173.pdfIn PDF document text
    • https://pinobuni.weebly.com/uploads/1/3/0/9/130969003/7010285.pdfIn PDF document text
    • https://sinuvuliwazima.weebly.com/uploads/1/3/1/8/131871572/pivoviralidiwij.pdfIn PDF document text
    • https://cdn.sqhk.co/zikufivol/fOgj8hg/best_qr_code_scanner_iphone_7.pdfIn PDF document text
    • http://selectgetc.top/will_there_be_another_divergent_bookcg33s.pdfIn PDF document text
    • https://cdn.sqhk.co/damukowabij/XqhgboZ/1809655205.pdfIn PDF document text
    • http://namabal.scienceontheweb.net/23744024151.pdfIn PDF document text
    • https://cdn.sqhk.co/rulowoka/LgfhdTX/sherlock_holmes_series_english_subtitles.pdfIn PDF document text
    • https://cdn.sqhk.co/toriwogadej/YhcVUJD/beautiful_wallpaper_hd_for_pc.pdfIn PDF document text
    • http://xulubapatoso.scienceontheweb.net/87662354558.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://larovitivejel.atwebpages.com/mavumavenebajesigilabapi.pdfIn PDF document text
    • http://bobixupeto.myartsonline.com/panokitofir.pdfIn PDF document text
    • http://nofolimuri.myartsonline.com/all_aarti_sangrah_download.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010a94.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A94 7368 bytes
SHA-256: 562a02de95bcd83d950e41e78e8de5d5b83545346f74721e62e477776c2191e3
font_01_sfnt_off000123ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x123AC 5852 bytes
SHA-256: d069134b6d868d6b8c4a83a628298f9bc39ebaa49d3c76909f23c86edb8783c9
font_02_sfnt_off0001379a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1379A 11924 bytes
SHA-256: 456af1dbf36aed2510c26708465914f2bbd7e4b82a82ce8bc92272acc2e9dd0d

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