Malicious PDF — malware analysis report

Static analysis result for SHA-256 762260b0193eaf61…

MALICIOUS

PDF

82.2 KB Created: 2020-12-02 08:24:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 62e802bb4582ddf00621efc5e037531e SHA-1: bdf7a71b79d699fe7e1565942742a56b214bf66f SHA-256: 762260b0193eaf61580db5eec51f5aa58de94cde41d8c68203cffb25f1436108
234 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains embedded links, one of which points to known malicious redirector infrastructure. The document body, though heavily obfuscated, suggests a lure related to 'operationalization of variables table'. The presence of numerous PDF links and a critical redirector link firing strongly indicates a phishing or redirection attempt. The ML classifier also flagged this PDF with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • Macro/content-enable lure medium SE_ENABLE_LURE
    Document instructs the user to enable macros or editing — a common technique used by malware droppers to bypass Office macro security settings
  • 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://gettraff.ru/123?utm_term=operationalization+of+variables+table In PDF document text
    • https://cdn-cms.f-static.net/uploads/4369923/normal_5fa1bffd4a510.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366384/normal_5f8f56d3d4855.pdfIn PDF document text
    • https://wefamojugibe.weebly.com/uploads/1/3/1/1/131164519/gowalawowape.pdfIn PDF document text
    • https://bajekilirevi.weebly.com/uploads/1/3/4/8/134868337/rizaju.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/vezosoluvezoj/tupirubozezoketixowavetij.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d6dbef5a-0185-458c-ac80-499898b64388/myspanish_lab_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9b338b7f-ef2f-4043-bb97-b7ff512166b8/dermatitis_de_contacto.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0f27ea13a450babf44921/t/5fc18053f3de5e49b59d5af1/1606516820663/59172572530.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b686cb9f-0ac8-42a3-8814-d157cc03a23a/sofuzekitogabemeda.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0de27085bf90c0efce9ba/t/5fc16b21e18c5c478e31433e/1606511394402/douglas_county_warrants_colorado.pdfIn PDF document text
    • https://s3.amazonaws.com/ravuxudibure/17542271162.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/87c9796c-bcbb-48d3-8a16-8e6f68b96d98/addition_property_of_equality.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6465e7c3-506b-439d-b5d0-0c3205073c69/jenakebi.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc10aaaf9866f3fd2d521c0/t/5fc30808f3de5e49b5c82324/1606617097634/49316059793.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e7383d4c-02fe-4e34-aab5-e16f7423f153/sewaguwixarugo.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 8

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

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000105cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x105CD 5172 bytes
SHA-256: 29ef6f5026ddd81ba016c658fea2c5906c32824ecdede3d6f9accdde582102a6
font_01_sfnt_off0001177b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1177B 10636 bytes
SHA-256: fcac1a28ab95bf22cc287a19a32d1204ce1c817d45194b9ecc543cbe60feb5cd

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