Malicious PDF — malware analysis report

Static analysis result for SHA-256 ce1d0ff79b2c35c2…

MALICIOUS

PDF

82.9 KB Created: 2021-09-17 23:19:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: 655ed496594ec13d9373335017ad1462 SHA-1: 530e0f51e28dcecff7051f996288568caa713849 SHA-256: ce1d0ff79b2c35c2fd4e45fafe12e6aa2e430da007ddba61f7afa93aa1ef266d
146 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

This PDF document was flagged by ML classifiers and ClamAV as malicious, exhibiting characteristics of phishing and potentially containing exploits. The 'SE_CALLBACK_LURE' heuristic indicates the document's content is designed to trick users into calling a phone number, a common tactic in tech-support scams or callback phishing. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it may serve as a lure for further malicious activity, potentially involving exploitation or redirection to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9846

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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://terremeraude.com/userfiles/file/bejagu.pdf In PDF document text
    • http://villa-margherita.biz/userfiles/files/62197103351.pdfIn PDF document text
    • http://theemasternetworker.com/ckfinder/userfiles/files/gematil.pdfIn PDF document text
    • https://biharlokmanch.org/userfiles/file/25057570371.pdfIn PDF document text
    • https://bahamianbrewery.com/ckfinder/userfiles/files/bikikomogilizejonewizip.pdfIn PDF document text
    • https://ctapigroup3.com/contents/files/71262103043.pdfIn PDF document text
    • http://sistarelaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/7440223577.pdfIn PDF document text
    • https://godparents4tz.org/home/god/public_html/ckfinder/userfiles/files/60672422044.pdfIn PDF document text
    • http://photo-ostrov.com/ckfinder/userfiles/files/losunututabidopu.pdfIn PDF document text
    • https://soechi.id/userfiles/file/55696009273.pdfIn PDF document text
    • http://globalone-mould.com/gbw/fckfiles/20210910181547.pdfIn PDF document text
    • http://royal-pizza.eu/files/file/voboralotukupikumasole.pdfIn PDF document text
    • http://constantemail.com/userfiles/file/163071913755209409424.pdfIn PDF document text
    • http://www.sunarozlem.com.tr/wp-content/plugins/super-forms/uploads/php/files/vnt7m6rs2d3c5k3p7o0rpa2jb4/numokawupol.pdfIn PDF document text
    • https://www.financedeclined.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/16141cca517cbd---rolenadaz.pdfIn PDF document text
    • https://sukaunited4d.vip/contents/files/96268467161.pdfIn PDF document text
    • https://ud-hobby.com/images/Upload/file/jemisufijesuruvep.pdfIn PDF document text
    • https://burlingame.com/wysiwygfiles/file/19593589031.pdfIn PDF document text
    • https://basalyemek.com/ckfinder/userfiles/files/zexizu.pdfIn PDF document text
    • http://lnv-cnc.com/userfiles/file/40725783998.pdfIn PDF document text
    • http://autosoftware.company/autoresponders_images/files/lijafalo.pdfIn PDF document text
    • http://bobhendrix-law.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/jepikalozinem.pdfIn PDF document text
    • https://rockeit.com/userfiles/file/8357686158.pdfIn PDF document text
    • http://hengtaixin.com/HangShun/ckfinder/userfiles/files/89161238001.pdfIn PDF document text
    • http://skisun.it/userfiles/files/nodasexopuzukifunak.pdfIn PDF document text
    • http://phutungotodungha.com/img/files/26317778008.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/DOqCt-cVA4I/uplcv?utm_term=bingo+blitz+real+moneyPDF link annotation
    • 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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dfc2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFC2 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000f7d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7D9 10652 bytes
SHA-256: 6689405fd3c8cd6e62ac9d8f767b244a8de6f3d82624c1b4022f9eb4312d2fb9
font_02_sfnt_off00011046.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11046 17756 bytes
SHA-256: 9eadcedff51f4285124ef6f905fce45a2c4ad637c1d28e752a590fbb13e27155