Malicious PDF — malware analysis report

Static analysis result for SHA-256 758b05505f1b93cc…

MALICIOUS

PDF

97.1 KB Created: 2020-11-18 05:40:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 1dd37dbe66b2e08294af65e53bea2cc4 SHA-1: 99497c4dbeb3b80526d724e2c9d608b1c12e8e88 SHA-256: 758b05505f1b93cc32ff1d98358af7255125fe369a79f6cd5eaafb6303322843
116 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The file is a PDF document flagged by ClamAV as a phishing trojan and a machine learning classifier. Heuristics indicate it contains an external URI and a callback phishing lure, suggesting it's designed to trick users into contacting a malicious entity. While no scripts were extracted, the presence of a malicious URL and the callback lure strongly indicate a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://traffking.ru/123?utm_term=rocky+point+nc+county PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4369519/normal_5f8f3bd0829ce.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403119/normal_5f9b975acaed2.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/ac378df8-a16b-4b12-a77d-ecabee3c20e7/54941685109.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b399ec86-88a4-4c46-ae06-339a2fff5221/73695863930.pdfIn PDF document text
    • https://s3.amazonaws.com/tetenifeme/71373693031.pdfIn PDF document text
    • https://s3.amazonaws.com/zuxadol/vijibomasutefetazug.pdfIn PDF document text
    • https://s3.amazonaws.com/viwoxuz/beladexavomuno.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7fa0e031-058a-4511-9add-79e2e5086beb/41144476042.pdfIn PDF document text
    • https://s3.amazonaws.com/jemazejodep/amazon_prime_video_onto_pc.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eaed57d8-0593-4818-a6c9-5514033650c6/lisubosaxelaweralavalisan.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/44fdb4f2-44b0-4d2e-b765-d12a221d8364/20488537286.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c3cb6398-3b57-456d-a3a3-025dff3e7b6d/xojitapito.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/849aac61-9078-4c65-a716-81d458f3f0b5/62495329775.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

Related samples 2

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001337a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1337A 4348 bytes
SHA-256: e0434ce3a30a2949c1896fd45c573b6e2384589e10408faece94bcff485a38df
font_01_sfnt_off00014263.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14263 11560 bytes
SHA-256: 72c2db32bd4ebdc1c42ad9f5a8317e6b083e0b25e23512d38885fd60e33d2504
font_02_sfnt_off0001697a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1697A 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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