Malicious PDF — malware analysis report

Static analysis result for SHA-256 1698bf8d6f97d7a5…

MALICIOUS

PDF

71.8 KB Created: 2021-02-15 17:30:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 6e6a83b30f0cccea73f0d301c6f49cc3 SHA-1: cd5067a0636578e67e85bcbe493ef37d7a3db2ca SHA-256: 1698bf8d6f97d7a5a023f99f6c838d6b601e9adb69404b6e96c14a743db35c47
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 6

  • 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 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://maypoin.ru/wix?keyword=sample+letter+of+child+support+agreement PDF link annotation
    • https://gijajagilaz.weebly.com/uploads/1/3/5/3/135313732/gukejupilawuruduxezi.pdfIn PDF document text
    • http://sokinabunerir.iblogger.org/ambili_song_wapmallu.pdfIn PDF document text
    • https://kuxokovu.weebly.com/uploads/1/3/0/7/130738635/mavazoraj_fifogat_gipof_luredi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384159/normal_60218a4eed8e7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4455380/normal_5fcb9e89e1913.pdfIn PDF document text
    • https://venubitolaxi.weebly.com/uploads/1/3/4/3/134372432/f4f3d013914428.pdfIn PDF document text
    • https://xazepobuzu.weebly.com/uploads/1/3/4/5/134582826/6459549.pdfIn PDF document text
    • http://gakujimogudap.22web.org/best_private_vpn_browser_for_android.pdfIn PDF document text
    • https://rikomurisixub.weebly.com/uploads/1/3/1/4/131454733/e4a4b6877929.pdfIn PDF document text
    • https://kerawidirara.weebly.com/uploads/1/3/4/7/134746453/dusarabakomisi.pdfIn PDF document text
    • https://benefirezunaxo.weebly.com/uploads/1/3/4/8/134864331/vidinebu.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4392237/normal_5ffabddea60ad.pdfIn PDF document text
    • https://wilasumoleliwu.weebly.com/uploads/1/3/1/4/131414134/zirufojufizejo.pdfIn PDF document text
    • https://durafozo.weebly.com/uploads/1/3/0/7/130740533/gokofukivi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://nemevefer.rf.gd/vukib.pdfIn PDF document text
    • http://repazof.rf.gd/anfotericina_b_desoxicolato.pdfIn PDF document text
    • http://wojudor.epizy.com/lolasubelewoput.pdfIn PDF document text
    • https://s3.amazonaws.com/bivanud/91166974536.pdfIn PDF document text
    • https://s3.amazonaws.com/liluvad/22960854548.pdfIn PDF document text
    • https://s3.amazonaws.com/takateg/killing_ground_movie_parents_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/sazixipame/acute_pancreatitis_guidelines_acg.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_off0000db90.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB90 5672 bytes
SHA-256: 8d267f1a867a903bf63c31fcd8e411e86796ad10f1a21ffd14bd0f47d2283531
font_01_sfnt_off0000eea9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEEA9 10220 bytes
SHA-256: 782fca712ccc8a9cc6e151cdc4a63248dba05963f17c52bb8da86bf925ae6b43

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