Malicious PDF — malware analysis report

Static analysis result for SHA-256 ed9e9b0dcd6bb31b…

MALICIOUS

PDF

68.6 KB Created: 2021-02-15 15:20:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: fb1da300e19fdcff3a805fbf6ce208d9 SHA-1: d8c604251bef7b42a4d9539cc193f49af5eea0c4 SHA-256: ed9e9b0dcd6bb31b68666fdb67def5dc1963b66fd1663aeec238f0dfcb0156b1
196 Risk Score

Malware Insights

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

The PDF contains a URL disguised as a helpful guide for setting up a Zmodo camera, which is a common lure for phishing or scam operations. The presence of numerous external links, including a link farm, and ClamAV detection as 'Pdf.Phishing.Trojan' strongly indicate malicious intent. While no scripts were directly extracted, the PDF structure and external links suggest it's designed to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 7

  • 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.
  • QR-code redirect lure medium SE_QR_LURE
    Document instructs the user to scan a QR code with a phone — consistent with QR phishing, but also common in legitimate documents
  • 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 https://jacksth.ru/wb?keyword=how%20to%20setup%20zmodo%20camera%20to%20wifi PDF link annotation
    • http://neritam.22web.org/xuviralatodimofaxu.pdfIn PDF document text
    • https://sijetuso.weebly.com/uploads/1/3/4/4/134499475/7943302.pdfIn PDF document text
    • https://fugopezawisobib.weebly.com/uploads/1/3/1/3/131383650/7229085.pdfIn PDF document text
    • https://motanaweda.weebly.com/uploads/1/3/4/3/134316912/rizovujanevo.pdfIn PDF document text
    • http://bupro.asia/xigikavuvutotawuzibimxzbq.pdfIn PDF document text
    • http://gakivako.iblogger.org/34917749320.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/medaliwifufugel/chiquita_banana_song_sheet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/migivewuwe/small_para_pptx.pdfIn PDF document text
    • https://s3.amazonaws.com/vanatul/hookah_bar_menu_template.pdfIn PDF document text
    • http://nutimuratibuzur.epizy.com/32313772285.pdfIn PDF document text
    • http://kewoxorewozox.rf.gd/chemical_engineering_science_template.pdfIn PDF document text
    • https://s3.amazonaws.com/ratixifo/loxagugigi.pdfIn PDF document text
    • https://s3.amazonaws.com/gixawetopoli/56602237274.pdfIn PDF document text
    • https://s3.amazonaws.com/lebejos/25170211172.pdfIn PDF document text
    • https://s3.amazonaws.com/vonutavekip/skype_old_version_offline_installer_free.pdfIn PDF document text
    • https://s3.amazonaws.com/vokeri/internet_corporate_reporting.pdfIn PDF document text
    • https://s3.amazonaws.com/jezekemunidup/been_together_mod_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/mefovu/dubenefama.pdfIn PDF document text
    • https://s3.amazonaws.com/babetafaperaxov/magic_circle_charger_android.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_off0000cfaf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCFAF 5372 bytes
SHA-256: 5d78173f648e5649a6d3864dbc23b7316dae9e8736bd446e9f464854dd17f3e7
font_01_sfnt_off0000e1f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1F6 10392 bytes
SHA-256: 01141e8a727f22d02210bc197456b0abd457f1b4d6a13ddf659eb172058d0427

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