Malicious PDF — malware analysis report

Static analysis result for SHA-256 a82248cc3a065550…

MALICIOUS

PDF

84.4 KB Created: 2021-02-02 11:48:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: fc71628d97263e5a8a403ba381c76b6d SHA-1: 7fc6e91497141ead068a5ec5cd8ffa3e21e7919c SHA-256: a82248cc3a065550ccf382be5de4c36886e1ed2caecdbe99b67a506226f3b36c
116 Risk Score

Malware Insights

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

The sample is a PDF document flagged by multiple heuristics as malicious, including a critical ClamAV detection for Pdf.Phishing.Trojan. The document body contains garbled text, but heuristics indicate it is a callback phishing or tech-support scam lure, prompting the user to call a phone number. An external URI, https://baarspo.ru/123?utm_term=in+the+triangle+above+is+x+90, was extracted, which is highly suspicious and likely leads to a malicious payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://baarspo.ru/123?utm_term=in+the+triangle+above+is+x+90 PDF link annotation
    • https://cdn.sqhk.co/guwewaxa/X1jjgiN/fulozoretumonipezosasuken.pdfIn PDF document text
    • https://cdn.sqhk.co/susojareb/hcSjhig/vixabiluduwutofoluwuxeki.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4374979/normal_5fff604bab492.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476421/normal_6008825c8f748.pdfIn PDF document text
    • http://ninozefumuwu.iblogger.org/angularjs_server_side_template_injection.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4365646/normal_5fc5f22373426.pdfIn PDF document text
    • https://cdn.sqhk.co/fegibowaxus/1gehaTn/39765687225.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4457311/normal_600621dee7e7f.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/xisefowu/joomla_templates_free.pdfIn PDF document text
    • http://titasukutisun.epizy.com/pederowumoniradobejiti.pdfIn PDF document text
    • http://boripodadup.epizy.com/goods_receipt_register_report_in_sap.pdfIn PDF document text
    • http://tesalivolanimeg.rf.gd/72257751837.pdfIn PDF document text
    • http://wukefomirufiza.rf.gd/pezin.pdfIn PDF document text
    • https://s3.amazonaws.com/zaxefemebidaz/92450507158.pdfIn PDF document text
    • https://s3.amazonaws.com/fejakixoweka/pubujigisud.pdfIn PDF document text
    • https://s3.amazonaws.com/jotogorurekuro/lijesip.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_off0000ebe2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBE2 4904 bytes
SHA-256: b3ec645ac7ab8e61a27ddb4c3dbf370a426e9b000a34b33f561199e14a901971
font_01_sfnt_off0000fcf0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFCF0 5448 bytes
SHA-256: 113de084d9b49072c9fd0e43db943229e3a17efd59e8d48a94d9974b1d3585e1
font_02_sfnt_off00010f75.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10F75 16876 bytes
SHA-256: 188458be10b7f49931fddcac4912309082ef147d7853d47a6fc1cf72e018a0ef

Open this report in the interactive analyzer, or submit your own file for analysis.