Malicious PDF — malware analysis report

Static analysis result for SHA-256 619c784ae4780287…

MALICIOUS

PDF

154.1 KB Created: 2021-02-16 20:30:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 613998d70f8397c3aa7c91f9758d6a17 SHA-1: 4ee8988d1bace492e7e9aa5d99ac2e8e07aeb29d SHA-256: 619c784ae47802878e2a29e6236ad15f2388ea4ab68bcf03f592fd0397ca4893
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains an embedded URI pointing to a suspicious domain, likely intended to trick the user into visiting a phishing or malware distribution site. The ML classifier and ClamAV detection strongly indicate malicious intent. The document body, though heavily obfuscated, appears to be a lure related to a search query, further supporting a phishing or social engineering attack vector.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://maypoin.ru/strik?utm_term=when+did+the+1st+industrial+revolution+start PDF link annotation
    • https://sirowatogiwu.weebly.com/uploads/1/3/2/8/132814809/405c8b4e6b11c.pdfIn PDF document text
    • http://fertpin.online/bosiwasokoderimefigenyuh2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4426277/normal_5ff40ceb27071.pdfIn PDF document text
    • http://gerisekazaleg.22web.org/73371011671.pdfIn PDF document text
    • https://zuxovupogoxa.weebly.com/uploads/1/3/5/3/135386903/fac757c26a9d.pdfIn PDF document text
    • https://fanazogi.weebly.com/uploads/1/3/0/9/130969494/wutinimalonuzomafa.pdfIn PDF document text
    • http://vabaxowerad.iblogger.org/waruvufeku.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4477658/normal_6001e00352058.pdfIn PDF document text
    • http://belplitka.ru/in_god_we_trust_coin_shopujidj.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://dodigemadepa.epizy.com/trumpet_voluntary_piano_sheet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/jidosatikim/60199663802.pdfIn PDF document text
    • https://s3.amazonaws.com/zunaduxa/android_phones_under_12000_rs_in_india.pdfIn PDF document text
    • http://rimalapotozuf.epizy.com/wamoja.pdfIn PDF document text
    • https://s3.amazonaws.com/livivuvuwugeb/93318977335.pdfIn PDF document text
    • http://rutuber.rf.gd/diwomepekikekanabu.pdfIn PDF document text
    • http://lubesugoninop.epizy.com/22193844775.pdfIn PDF document text
    • https://s3.amazonaws.com/vuraradaso/1809972033.pdfIn PDF document text
    • http://legekiwogitevil.epizy.com/bookmanager_2_free.pdfIn PDF document text
    • http://kulivobelokogun.epizy.com/ajay_devgan_photo_free.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_off00021f19.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x21F19 5040 bytes
SHA-256: b200827561a7f1783501df6af0c1ccc9c7924003edb4117137ecc126a09bd989
font_01_sfnt_off0002304a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2304A 12160 bytes
SHA-256: 4859f680a3b41201f12dbccc051da497d96423f9cc75365337fdd62ce17436c4

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