Malicious PDF — malware analysis report

Static analysis result for SHA-256 446c21b0d9cff74d…

MALICIOUS

PDF

63.1 KB Created: 2021-02-14 21:52:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 9990276c6be3fd70267b38fbcdcac955 SHA-1: 26b722c301d2887199a5a964db835081d05f8bea SHA-256: 446c21b0d9cff74d44219c175b1f57736c1adc1b0093a96d50e9a7fc7235d30a
126 Risk Score

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://baarspo.ru/wix?keyword=reliance+manual+transfer+switch+60a+125%252F250v PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4385028/normal_5ff9b2a9640e0.pdfIn PDF document text
    • http://3gusevshop.space/bpsc_mains_question_paper_political_scienceqpy5r.pdfIn PDF document text
    • https://rokopopowatapo.weebly.com/uploads/1/3/0/9/130969888/defenonirogef.pdfIn PDF document text
    • https://womomoko.weebly.com/uploads/1/3/4/8/134848640/tazifiwusafa.pdfIn PDF document text
    • http://idealica-columbia.site/7659454950384ov8.pdfIn PDF document text
    • http://gufutaca1.xyz/18071333595smt1b.pdfIn PDF document text
    • http://esagafow.fun/pubg_not_ing_from_play_storexo94t.pdfIn PDF document text
    • http://pedrons.space/netflix_dvd_department_phone_numberqa5in.pdfIn PDF document text
    • https://pigabatanez.weebly.com/uploads/1/3/1/3/131380253/3755ea.pdfIn PDF document text
    • https://vumopofusub.weebly.com/uploads/1/3/0/8/130874587/batuwadojalu-muwozarub-bexizadagojo.pdfIn PDF document text
    • http://sexugaweguko.iblogger.org/pronunciation_guide_for_financier.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/dozore/canoscan_toolbox_windows_10_64_bit.pdfIn PDF document text
    • https://s3.amazonaws.com/dipafuxe/bufalinar.pdfIn PDF document text
    • https://s3.amazonaws.com/zerepuzuze/android_studio_update_gradle_wrapper.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_off0000b890.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB890 5920 bytes
SHA-256: 102378d2ade6616b110176fbfa975e8afee07c566b997669ad497962d50bc433
font_01_sfnt_off0000ccb2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCCB2 10096 bytes
SHA-256: 447ecd75db52ea4fbb03448fec34912c820c599fa0f0289caf07821bdd65cd03