Malicious PDF — malware analysis report

Static analysis result for SHA-256 faf42d9b83fc6841…

MALICIOUS

PDF

94.3 KB Created: 2021-02-24 14:44:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: d4298fcef14748a70458c725931458d7 SHA-1: c9ab02bba49d88341069219c4887e3a121a29ec7 SHA-256: faf42d9b83fc684159641b1ef0c5b49a9917f83a46da572e86c240e913d69f7e
96 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 ClamAV detection and an ML classifier, indicating malicious intent. The embedded URL `https://seumenha.ru/strik?utm_term=amazon+kindle+fire+d01400+%25D0%25BF%25D1%2580%25D0%25BE%25D1%2588%25D0%25B8%25D0%25B2%25D0%25BA%25D0%25B0` suggests a phishing lure related to Amazon Kindle products. Although no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of a phishing campaign, likely delivered as a spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://seumenha.ru/strik?utm_term=amazon+kindle+fire+d01400+%25D0%25BF%25D1%2580%25D0%25BE%25D1%2588%25D0%25B8%25D0%25B2%25D0%25BA%25D0%25B0 PDF link annotation
    • http://instup.xyz/61885758465xmu0k.pdfIn PDF document text
    • https://gidiwukos.weebly.com/uploads/1/3/1/3/131381706/xigelewudana.pdfIn PDF document text
    • http://reduslim-shop.site/notations_21_theresa_sauerw0bzv.pdfIn PDF document text
    • https://nupinegudoxaxu.weebly.com/uploads/1/3/5/3/135350485/vogirekebuteza.pdfIn PDF document text
    • http://sexedate69.site/wynk_music_apk_promo_codeqhsl7.pdfIn PDF document text
    • https://sotoxitubomiv.weebly.com/uploads/1/3/2/6/132695919/fivubiwijuzarox.pdfIn PDF document text
    • http://lg-copyright.com/49784693429jqo5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376611/normal_60191ee9c2592.pdfIn PDF document text
    • http://1offpark.xyz/mimevexoki5bw9z.pdfIn PDF document text
    • https://lavabowigu.weebly.com/uploads/1/3/2/6/132682694/zuvovikoxabid.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4365606/normal_5fc7ee1b0091d.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/pidufozu/zapefesozoxubo.pdfIn PDF document text
    • https://s3.amazonaws.com/nitatotol/wuzuramaruwoj.pdfIn PDF document text
    • http://bawilifugoxak.epizy.com/premiere_title_template_free.pdfIn PDF document text
    • https://s3.amazonaws.com/wajibile/ikaruga_ps4_trophy_guide.pdfIn PDF document text
    • http://jifigazanovew.epizy.com/beatles_mono_albums.pdfIn PDF document text
    • http://bulagim.epizy.com/how_to_read_bone_marrow_aspiration_report.pdfIn PDF document text
    • https://s3.amazonaws.com/fotojipifuzitul/bangladeshi_movie_nabab.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010a4a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A4A 6128 bytes
SHA-256: 5b12ca41a9606f859621049a930018aac08494452869f61649e8a95e184adc0a
font_01_sfnt_off00011e37.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11E37 17212 bytes
SHA-256: e33eda34bf178b53f2ef5ef5051be599f1b94db1846b71e1e4bbb180bbcbbe60
font_02_sfnt_off00015395.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15395 16204 bytes
SHA-256: a95eff378c135b1ab40d10b3cd1da1bafbc07f86005f57898d079c90d712ddbd

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