Malicious PDF — malware analysis report

Static analysis result for SHA-256 07e159c1fce757ae…

MALICIOUS

PDF

77.7 KB Created: 2021-01-09 01:47:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 7c0a837a28059efdf55bb688b390c8f5 SHA-1: 5ce72fe24ab7e08fc8740435159e95dc2fc5c32d SHA-256: 07e159c1fce757aed6f1c4b6edf0cebb6bfe161a7daa75c66f18fcdb4ea4ff27
214 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one identified as a malicious redirector. The heuristic firings indicate the document is designed to link to external content, likely for phishing or malware distribution. While no scripts were explicitly extracted, the nature of the embedded links and the ClamAV detection suggest a malicious intent to redirect users to harmful sites.

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
  • 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.
  • 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=alvin+and+the+chipmunks+dave%2527s+wonderful+life In PDF document text
    • https://wasefopepaseb.weebly.com/uploads/1/3/1/8/131856398/6c56dad.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4493888/normal_5fe9c1d3b16fa.pdfIn PDF document text
    • https://wotipivas.weebly.com/uploads/1/3/1/4/131482993/rakigan_dizofonis_tilaranuxobu_kavibez.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375339/normal_5f8ac8e66d7a7.pdfIn PDF document text
    • https://foxagizak.weebly.com/uploads/1/3/4/3/134332010/7177807.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384039/normal_5fd2510cd38b9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4484356/normal_5fc4afc5cc146.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454691/normal_5fade53e18a63.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/henghuili-files2/mejodolelevotuval.pdfIn PDF document text
    • https://s3.amazonaws.com/satedafadusizo/menoxodixawoxemunize.pdfIn PDF document text
    • https://s3.amazonaws.com/gozilum/breadman_tr520_manual_en_espaol.pdfIn PDF document text
    • https://s3.amazonaws.com/loneminovu/latest_windows_10_education_iso.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_off0000ef02.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF02 5636 bytes
SHA-256: c321feb282b591cdacdd827bd0113d9188ec7a20b8d77165bfea787f23c94779
font_01_sfnt_off0001021f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1021F 11592 bytes
SHA-256: e1547fcbbd1e7469a6e09bb8f17fe249b2959dca8d405779d0d3704869729d24

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