Malicious PDF — malware analysis report

Static analysis result for SHA-256 18a5c93019054ff6…

MALICIOUS

PDF

69.6 KB Created: 2020-12-28 05:48:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 3ced8dfb76a5108b167cc42cc8bcdfa7 SHA-1: 6ba863158e343156c8b1e5b9f63148137fe1d762 SHA-256: 18a5c93019054ff61667ab0f398faa9eac95865a8d9b13cc3e95eb6f510c990a
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains a critical heuristic firing indicating it links to known malicious redirector infrastructure. The embedded URL 'https://ggtraff.ru/123?utm_term=decatur+county+high+school+tn' is identified as a potential phishing or malware distribution point. The ML classifier and ClamAV detection further support the malicious nature of this file, suggesting it's designed to lure users to harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • 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.
  • 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://ggtraff.ru/123?utm_term=decatur+county+high+school+tn In PDF document text
    • https://static.s123-cdn-static.com/uploads/4408984/normal_5fe557bee6916.pdfIn PDF document text
    • https://sofakixejiz.weebly.com/uploads/1/3/4/2/134265497/milidog.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382208/normal_5fd283c4c3ec7.pdfIn PDF document text
    • https://cdn.sqhk.co/domuduxuro/ignsgd2/25413890953.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365540/normal_5f8b054ecb5b3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450632/normal_5fdd94818d2a6.pdfIn PDF document text
    • https://zabamaki.weebly.com/uploads/1/3/4/8/134849969/9729845.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366381/normal_5f99f63b4c58b.pdfIn PDF document text
    • https://cdn.sqhk.co/jekefebiba/jiFgghj/adidas_yeezy_boost_700_analog.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/gupawupigawono/download_anthills_of_the_savannah_summary.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/29adad9e-9c64-4f15-ba81-36a9eba5494c/tera_priest_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3c291abf-a122-4b92-a969-9d7a4f5c3c12/diddie_wah_diddie_lyrics_blind_blake.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_off0000d283.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD283 5164 bytes
SHA-256: cbfa49e52901af86f83876375e08908a67330c8a32dc2bac36218b165ac69965
font_01_sfnt_off0000e420.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE420 11076 bytes
SHA-256: dc2c52900174c198222f61f44e4ce614903f9b4a1a7fbbb094d25231a36172f1

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