Malicious PDF — malware analysis report

Static analysis result for SHA-256 9323d97aab9d110e…

MALICIOUS

PDF

1.01 MB Created: 2021-04-05 08:22:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: ebc79722ef99dc8be1ab00d015eb2277 SHA-1: 5dfd8c9b39cc2dacc700fc57ca98b3ddaa5a688e SHA-256: 9323d97aab9d110eb0d5d50c2db7747f9b54dd82da62ae3cc1b32589aa635470
66 Risk Score

Malware Insights

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

The file is identified as a malicious PDF by ClamAV, specifically a phishing variant. It contains an embedded URL pointing to a phishing site, disguised as a pharmacology book download. The document body, though partially corrupted, contains keywords related to the lure and the authoring application, further supporting the phishing pretext. No scripts were extracted, but the presence of external URIs and the ClamAV detection strongly indicate a phishing attempt.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4654

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://bologen.ru/strik?utm_term=kd+tripathi+pharmacology+mcq+book+pdf+download PDF link annotation
    • https://wanuzixa.weebly.com/uploads/1/3/1/4/131482886/zumotupopogirirafo.pdfIn PDF document text
    • http://pawomodom.medianewsonline.com/biology_chapter_11_introduction_to_genetics.pdfIn PDF document text
    • http://pekefosijemibi.sportsontheweb.net/chamakam_meaning_in_telugu.pdfIn PDF document text
    • https://cdn.sqhk.co/sixatowitur/XUhepjh/49957546977.pdfIn PDF document text
    • https://telefaxukewinet.weebly.com/uploads/1/3/4/3/134320065/6658695.pdfIn PDF document text
    • http://girlita.space/lufigogixebadapgfqzw.pdfIn PDF document text
    • http://prizinsta.info/xijapuxapn84g.pdfIn PDF document text
    • http://pufegusikozig.22web.org/personal_statement_template_for_teaching_jobs.pdfIn PDF document text
    • https://cdn.sqhk.co/kuzetuzame/uajbQ57/lukodadapevebevovivusifu.pdfIn PDF document text
    • http://relaguguwo.22web.org/rapidex_english_speaking_course_kannada_book_free_download.pdfIn PDF document text
    • https://mimitokiwunas.weebly.com/uploads/1/3/4/0/134012498/23e396705247e4.pdfIn PDF document text
    • http://zapitexidij.mypressonline.com/85765915999.pdfIn PDF document text
    • http://reduslim-siteofficial.site/vesakowewul0al.pdfIn PDF document text
    • https://pozukelemiku.weebly.com/uploads/1/3/2/6/132682282/ladaxoxiwodababab.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/wewuxuviwar/animation_after_effects_free.pdfIn PDF document text
    • http://daxijofasazavod.rf.gd/emerald_tablets_of_hermes.pdfIn PDF document text
    • https://s3.amazonaws.com/tuxalowafokuvo/action_research_project_template.pdfIn PDF document text
    • https://s3.amazonaws.com/tezofuretejom/connotation_denotation_worksheets_6th_grade.pdfIn PDF document text
    • http://ligoroxenafof.atwebpages.com/cosmic_ray_spallation.pdfIn PDF document text
    • https://s3.amazonaws.com/jixeremipet/commission_contract_template_word.pdfIn PDF document text
    • http://padukejuredi.rf.gd/63393633563.pdfIn PDF document text
    • https://s3.amazonaws.com/zafijukopa/25852181329.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_off000fd35d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD35D 5884 bytes
SHA-256: 7fadc3c313e5c9ca51eff95e530764d7e94001aedb4b0e45f2a71d162c39fea4
font_01_sfnt_off000fe758.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE758 9780 bytes
SHA-256: 3eb47b5c4a859bb18b89df3b4cdfaa4c6acf188965f4003171a8caa566414b95

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