Malicious PDF — malware analysis report

Static analysis result for SHA-256 1065b5df487c45d0…

MALICIOUS

PDF

77.1 KB Created: 2021-03-22 15:41:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: 63ecbc3eb3667c2a375f473abf934845 SHA-1: 9d471fdf69e011c5cda9a34deae1570cdf76e2c9 SHA-256: 1065b5df487c45d07c0c373be6196fb356087bf768b60cba3746fa347239cc1d
156 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many of which point to unknown or potentially malicious domains, indicating a link farm or phishing lure. The ClamAV detection and ML classifier strongly suggest malicious intent. While no scripts were explicitly extracted, the PDF structure and numerous external links are indicative of a phishing or malware distribution attempt, likely leveraging embedded JavaScript for malicious actions.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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 http://idealica-it.website/kicker_kq5_manual70r96.pdf In PDF document text
    • http://gididowofugu.iblogger.org/fubewefonizolozizumij.pdfIn PDF document text
    • http://academic-club.ru/6762150954797y8p.pdfIn PDF document text
    • https://xuvurabog.weebly.com/uploads/1/3/2/6/132696285/77c818ac896bf4e.pdfIn PDF document text
    • http://kebuwakuje.medianewsonline.com/60925603222.pdfIn PDF document text
    • https://niwubeleligijoz.weebly.com/uploads/1/3/4/7/134764474/xibifixas.pdfIn PDF document text
    • http://mebets.xyz/types_of_fiber_optic_cable_connectors4tj8b.pdfIn PDF document text
    • http://circulshtangcalip.website/best_inspirational_books_to_read_20202mdkj.pdfIn PDF document text
    • https://sujofunipus.weebly.com/uploads/1/3/4/5/134502209/negukoxovojis-kibopom-boboguruj-wukated.pdfIn PDF document text
    • https://ripaduwik.weebly.com/uploads/1/3/5/3/135311581/gojozodo-senanebitenidu-wafomumine-netijaxip.pdfIn PDF document text
    • https://litunuvojiv.weebly.com/uploads/1/3/0/9/130969221/5033953.pdfIn PDF document text
    • http://werojati.getenjoyment.net/13628333078.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://feedproxy.google.com/~r/wb/ENAH/~3/dRGGkpkNhSI/wb?keyword=kagan%20teaching%20strategies%20pdfPDF link annotation
    • https://s3.amazonaws.com/kozibowisenatu/first_rap_song_to_hit_1_billboards.pdfIn PDF document text
    • http://jiboxinazelode.rf.gd/kesuwonevipodis.pdfIn PDF document text
    • https://s3.amazonaws.com/xonaxevetaf/90191095832.pdfIn PDF document text
    • https://s3.amazonaws.com/veledabejufi/17052486532.pdfIn PDF document text
    • https://s3.amazonaws.com/figugipopar/jopixusarunotuveza.pdfIn PDF document text
    • http://vagasobewinepu.rf.gd/lei_complementar_123_simples_nacional.pdfIn PDF document text
    • https://s3.amazonaws.com/gisujubolidine/what_are_the_4_major_biomes.pdfIn PDF document text
    • https://s3.amazonaws.com/tiduro/40499890603.pdfIn PDF document text
    • https://s3.amazonaws.com/nokiva/27979047574.pdfIn PDF document text
    • https://s3.amazonaws.com/podawakumepewez/the_way_of_the_shaman_book_8.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_off0000f04a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF04A 5352 bytes
SHA-256: 380b122380834fa3df3e38ee2a8a77fbb6158ea1748ef448b0626ceadd828ce8
font_01_sfnt_off00010283.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10283 10736 bytes
SHA-256: d1f718be1135c438b9be4da1f18955384652693f3b85fe41cb3a4d1aebf34ce0

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