Malicious PDF — malware analysis report

Static analysis result for SHA-256 fbf99ed7e2f521fd…

MALICIOUS

PDF

109.1 KB Created: 2021-02-16 08:12:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 89855248543424e8d40c07233348e99e SHA-1: 3858f02f07f2a21e4ca26ebcf87795cb44fde1fb SHA-256: fbf99ed7e2f521fd8c0e72e8d037fd2c86ed4aff3bd37f617e8a40deecaed6a5
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The presence of embedded URLs, specifically the one pointing to 'jottigo.ru', suggests a phishing or malware distribution attempt. Although no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of a common phishing lure designed to trick users into downloading further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://jottigo.ru/wix?keyword=historical+documents+and+speeches+congressional+powers+worksheet+answers PDF link annotation
    • https://rebodegumirimak.weebly.com/uploads/1/3/0/7/130775130/5ac7c273.pdfIn PDF document text
    • http://vashastrahovka24.ru/ffxiv_ravana_hard_guideiylu3.pdfIn PDF document text
    • https://cdn.sqhk.co/dulinifijal/Nb1jf61/givatuj.pdfIn PDF document text
    • https://wusowekop.weebly.com/uploads/1/3/2/7/132741020/wewilijulazivijoweb.pdfIn PDF document text
    • http://fb-pageunderreview.com/697670945684wuqg.pdfIn PDF document text
    • https://cdn.sqhk.co/fuvebopeweb/ihdNhiN/gopatopeziwopisenuragu.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4388280/normal_5ff621190a76a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4367019/normal_5fc603e20e820.pdfIn PDF document text
    • https://cdn.sqhk.co/sewuvavimebi/hhigibu/cross_stitch_patterns_flower_fairies.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4464542/normal_5fe22b45a021e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4426267/normal_5fe23f762400b.pdfIn PDF document text
    • https://lepepapiminokuj.weebly.com/uploads/1/3/4/4/134493398/miloro.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392191/normal_5fe8dac24d0e1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4486036/normal_5fe31ad24f420.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417212/normal_6009cc2001b5c.pdfIn PDF document text
    • https://cdn.sqhk.co/jilelemo/begdBha/numbers_1_to_100_in_french_song.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4480905/normal_5fefeee11edf1.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/sajezife/deadlight_trophy_guide_ps4.pdfIn PDF document text
    • https://s3.amazonaws.com/salosibejodod/regedowebubuzudobevisip.pdfIn PDF document text
    • https://s3.amazonaws.com/kukupunopedon/les_adjectifs_possessifs_en_franais_exercices.pdfIn PDF document text
    • https://s3.amazonaws.com/mizeteb/mackie_srm450_spec_sheet.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001622e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1622E 5484 bytes
SHA-256: 93a6338f0238d1686704ea7419d2db3033c49f88e9b06bf7a564692a97369aec
font_01_sfnt_off000174ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x174AC 10144 bytes
SHA-256: 7a2ae6133dbff8a3ab272b867284ff512bba7c349c67e9002a18bc1e7a6192b7
font_02_sfnt_off0001974e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1974E 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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