Malicious PDF — malware analysis report

Static analysis result for SHA-256 783279289ee29692…

MALICIOUS

PDF

78.1 KB Created: 2020-12-30 03:51:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 92c2caa92ff60e09d46cab3c095b0ee2 SHA-1: 7593c97a39a85258febfb02eb22f509ceb62d54d SHA-256: 783279289ee296922c09d3fc6bc9350687f743fd59ea3d81faed99f72d34d4c1
374 Risk Score

Malware Insights

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

This PDF file exhibits multiple malicious characteristics, including linking to known malicious redirectors and impersonating brands for credential phishing. The document also contains a mass external PDF link farm, suggesting an attempt to distribute malicious content or engage in SEO manipulation. The presence of a password-protected archive lure and callback phishing elements further indicate a malicious intent to deceive users into downloading further payloads or engaging in fraudulent activities.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

Heuristics 9

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • Brand-impersonation credential phishing lure critical SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: action link to abused redirector https://webupusew.weebly.com/uploads/1/3/5/3/135344455/9d077d9417.pdf.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • Payment redirection / bank-detail change lure high SE_PAYMENT_REDIRECT_LURE
    Document describes new or changed bank, wire, ACH, IBAN, SWIFT, or routing instructions — a high-value business-email-compromise pattern
  • 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.
  • 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://traffine.ru/strik?utm_term=swot+analysis+report+example+pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4382638/normal_5f9011cd4a989.pdfIn PDF document text
    • https://webupusew.weebly.com/uploads/1/3/5/3/135344455/9d077d9417.pdfIn PDF document text
    • https://xavoxoxuda.weebly.com/uploads/1/3/1/3/131379246/pujobirifagi-vegakuwej.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382405/normal_5f90d597d161d.pdfIn PDF document text
    • https://cdn.sqhk.co/zupodejadofe/EihkghN/jafokukevopuvilinamexoge.pdfIn PDF document text
    • https://ziwuwozapa.weebly.com/uploads/1/3/4/5/134517717/wuvomaraga.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://uploads.strikinglycdn.com/files/a5744d06-2d84-420f-ba7e-7dc00d169d9a/bizisubiburoj.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a0567e36-d897-49f3-9e07-4e55b97c1279/69118493239.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a33b414f-d2e7-4302-ab05-e4adb016d376/62187007261.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7353d3f5-e464-4fba-b010-2d2cdc18851a/695811073.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_off0000e840.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE840 5340 bytes
SHA-256: d46eb145422410f26e4ec7d33b7f60a1713dfededc39a849b01d4cc6e4d6d814
font_01_sfnt_off0000fa64.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA64 10312 bytes
SHA-256: a71d56792cd60df390f30ee8ca520740a2f2e199dd200bc57510cbdc1682d246
font_02_sfnt_off00011dc0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11DC0 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3