Malicious PDF — malware analysis report

Static analysis result for SHA-256 d3f96b5986dd4e1a…

MALICIOUS

PDF

89.5 KB Created: 2021-02-15 03:44:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: b3cf8dd0eeec51c158f5aedd7eb53eb3 SHA-1: 3cceea28b8c89366eaf4c50c65c731ac1f1f439e SHA-256: d3f96b5986dd4e1a82ad0032784af13c1433762bea6b9c4679d04ab0903ea59b
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file was flagged by multiple heuristics, including a critical finding for a 'PDF_SEO_LINK_FARM' and ClamAV detection as 'Pdf.Phishing.Trojan'. The document contains numerous external links, suggesting an attempt to redirect users to malicious sites. While no scripts were explicitly extracted, the presence of embedded URLs and the overall structure indicate a phishing or malicious redirection attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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 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.
  • 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://crophysi.ru/123?utm_term=costa+mesa+library+donald+dungan PDF link annotation
    • https://bazanepuxakelu.weebly.com/uploads/1/3/4/3/134346533/4805d0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4453144/normal_5feb661e66ce0.pdfIn PDF document text
    • https://cdn.sqhk.co/xaripisi/7FLjfVT/2002_silverado_stepside_bed_for_sale.pdfIn PDF document text
    • https://wuduzavuvavazi.weebly.com/uploads/1/3/4/6/134618101/3071771.pdfIn PDF document text
    • https://cdn.sqhk.co/nugopanage/IhgjgQP/75035654987.pdfIn PDF document text
    • https://tazuwadafif.weebly.com/uploads/1/3/4/8/134857375/1e230091b593f7.pdfIn PDF document text
    • https://cdn.sqhk.co/xawobovuji/6lhfTl4/block_triangle_puzzle_tangram.pdfIn PDF document text
    • https://cdn.sqhk.co/womilepeba/hbgjjcV/t-_mobile_tuesdays_burger_king.pdfIn PDF document text
    • https://tofibuji.weebly.com/uploads/1/3/5/3/135309424/9777014.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/kifutizijebuj/valigipoxuguposetasapevip.pdfIn PDF document text
    • https://s3.amazonaws.com/fidefofudi/christmas_images_jesus.pdfIn PDF document text
    • https://s3.amazonaws.com/gavexilatuvitaz/65722500292.pdfIn PDF document text
    • https://s3.amazonaws.com/vebenok/8569432188.pdfIn PDF document text
    • https://s3.amazonaws.com/goviwigax/jugalelufojabeguwa.pdfIn PDF document text
    • https://s3.amazonaws.com/numegubowalonan/lagutexurobe.pdfIn PDF document text
    • http://kubuxakul.epizy.com/funeral_service_leaflet_template.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e5ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5AD 5292 bytes
SHA-256: a94c682174cae662cb597d4f1ff6c3fe7cf2e86222ac3faf4db16cabc7e2e00e
font_01_sfnt_off0000f78a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF78A 6884 bytes
SHA-256: d9129384f3812846272fb871dca3e8863cad01eab34c63ec557962e02dd6b4d2
font_02_sfnt_off00010f5f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10F5F 11488 bytes
SHA-256: 88c69894e97963fbf71c1b06b2c408bc4967b518b7c354590ea77779aa7554a8
font_03_sfnt_off00013592.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13592 16036 bytes
SHA-256: 149cab45689013e99d1aa520d2e5234663aa5d8577b6aae5e423b5d60aeda4c1
font_04_sfnt_off000149fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x149FA 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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