Malicious PDF — malware analysis report

Static analysis result for SHA-256 c393cd269bb5c49e…

MALICIOUS

PDF

82.3 KB Created: 2021-03-24 00:06:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: 33b70040078045af6430ee627c113f80 SHA-1: b675af739cf16e5a10d747d37856568f767fcaf9 SHA-256: c393cd269bb5c49e4a1533cfbc346ddf080251fa378433d42a809f5b14455c3c
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF document contains numerous embedded URLs pointing to suspicious domains, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URIs are indicative of a common attack pattern where users are redirected to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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 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://dugedepap.ru/strik?utm_term=is+political+science+good+for+ias PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4423452/normal_5ffcb2769472e.pdfIn PDF document text
    • http://drovazvenigorod.ru/height_limit_for_diono_radianpe148.pdfIn PDF document text
    • http://revershjtb.site/2497685764ey57.pdfIn PDF document text
    • http://helpcenterbusiness.xyz/praise_and_worship_bible_study_guidetnoi6.pdfIn PDF document text
    • http://christmas-gift.ru/how_to_tell_when_wheat_is_ready_to_harvestxbidu.pdfIn PDF document text
    • https://faniruwesil.weebly.com/uploads/1/3/5/9/135993686/3213362.pdfIn PDF document text
    • http://pixxel.life/17328710658n64zb.pdfIn PDF document text
    • https://luxoxika.weebly.com/uploads/1/3/4/8/134899107/e37fc.pdfIn PDF document text
    • http://teachost.com/betawifigezenipujomupv5j22.pdfIn PDF document text
    • http://sayfelengs.space/xatuxofenogivopek2jnob.pdfIn PDF document text
    • http://helpcopyright-service.com/217230044135zc32.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4374360/normal_5fc9d3c4b0aa7.pdfIn PDF document text
    • http://kindraretterath.com/desert_worms_brick_rigsobzte.pdfIn PDF document text
    • https://faliroralomi.weebly.com/uploads/1/3/0/8/130874474/70aaf9cd6f6ef.pdfIn PDF document text
    • http://5-euro.info/6194346661082rc.pdfIn PDF document text
    • http://luminar3-download.xyz/how_do_i_fix_lazy_spa_e02_errorf41p4.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/votubukaxogilix/dragon_age_origins_zevran_approval_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/ribowexulo/graphic_organizer_template_story_map.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_off0001042f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1042F 5260 bytes
SHA-256: 99449d2fc3453a35a6a743b8c3ecf654c68cbff8dcdd92312e39740e8348d068
font_01_sfnt_off00011622.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11622 11024 bytes
SHA-256: c25b87433e81786b9ceb004ebb0f360645dc9b59de696a1449c75c7d9cef5ff4

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