Malicious PDF — malware analysis report

Static analysis result for SHA-256 56a38492fcfaccf5…

MALICIOUS

PDF

77.8 KB Created: 2021-03-23 12:42:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-20
MD5: 00f604eaad3cdf86dbe13d9fa4e01055 SHA-1: 582f5815e119c12f369dc364b22c613844bee2ad SHA-256: 56a38492fcfaccf5ae9969b9e7442cafb809bccc02ede42e49f132b8937a13d7
166 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1566.002 Spearphishing Link T1059.007 JavaScript

This PDF document was flagged by multiple heuristics, including ML classification and ClamAV, indicating malicious intent. The 'SE_MFA_LURE' heuristic strongly suggests a credential harvesting or session token theft attempt by impersonating a multi-factor authentication or one-time code verification process. The document also contains numerous embedded URLs, many pointing to disposable hosting, consistent with a phishing or link farm strategy to distribute malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • MFA / one-time-code harvesting lure high SE_MFA_LURE
    Document asks for a one-time code, authenticator approval, or MFA confirmation — consistent with credential phishing kits that steal session tokens or abuse multi-factor authentication
  • 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://botokaw.ru/award?keyword=september+blank+calendar+pdf PDF link annotation
    • https://cdn.sqhk.co/lokiwejawe/jdZidhh/most_horror_movie_on_prime_video.pdfIn PDF document text
    • https://cdn.sqhk.co/tikatonasa/6ClsMSc/zekeminuwimuxeresigibi.pdfIn PDF document text
    • https://cdn.sqhk.co/fafujedajir/pbaigjf/mabefiluxereralupigo.pdfIn PDF document text
    • https://cdn.sqhk.co/devisofage/hePjhYd/55914626900.pdfIn PDF document text
    • https://cdn.sqhk.co/zejejofe/ijTggjc/luxozimizolajaf.pdfIn PDF document text
    • https://cdn.sqhk.co/gagupedoxut/vfeB0ia/74715252470.pdfIn PDF document text
    • https://cdn.sqhk.co/zotenejek/ghhijbO/buziwosimexazigikoxi.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/kudufigunabi/arduino_nano_every_pins.pdfIn PDF document text
    • http://fowibetubopofaf.rf.gd/sacroiliac_joint_dysfunction_treatment.pdfIn PDF document text
    • https://s3.amazonaws.com/bivanud/vikidexuragejizuzo.pdfIn PDF document text
    • http://dotalikajulu.rf.gd/simple_present_tense_exercises.pdfIn PDF document text
    • http://sejuralun.epizy.com/pdf_cinderella_short_story.pdfIn PDF document text
    • https://s3.amazonaws.com/bezutu/65575305595.pdfIn PDF document text
    • http://tufuripisaren.epizy.com/jezuliranatagemigukowaju.pdfIn PDF document text
    • https://s3.amazonaws.com/rubidokezive/44633765670.pdfIn PDF document text
    • https://s3.amazonaws.com/waxegatulo/tesoxakizirekilajorariwi.pdfIn PDF document text
    • http://rezimezamuz.rf.gd/social_media_marketing_strategy_example.pdfIn PDF document text
    • http://mugudupo.epizy.com/weather_report_kangan_pur.pdfIn PDF document text
    • https://s3.amazonaws.com/genedonapubefe/16891819648.pdfIn PDF document text
    • https://s3.amazonaws.com/vovopafubipu/89703339052.pdfIn PDF document text
    • http://maludoxowo.rf.gd/cisco_introduction_to_networking_chapter_3_exam_answers.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_off0000f08a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF08A 5432 bytes
SHA-256: c9cb5bf7876742e0474d8eeae94ae650bbc23eee87acba32501922fa05a2cf71
font_01_sfnt_off000102e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x102E9 11040 bytes
SHA-256: c67f65033effa1b941c49ff17dd947a38ef24c700966de1eaf95368c54657c5f

Open this report in the interactive analyzer, or submit your own file for analysis.