Malicious PDF — malware analysis report

Static analysis result for SHA-256 badc9d0aa620fbcb…

MALICIOUS

PDF

82.4 KB Created: 2021-02-23 03:09:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: b1284eed28a7d680c052237d85e28e7a SHA-1: 1393e5542c8420ab86bbaba094d2bd252f2907b7 SHA-256: badc9d0aa620fbcbe69583724408fedd052d48af6c4991300680364189dad009
170 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector infrastructure, disguised as a manual for a Mercury 25hp outboard motor. This, combined with the ML classifier and ClamAV detection, strongly indicates a malicious intent, likely to deliver a secondary payload or phish for credentials. The document body's obfuscated nature and the presence of embedded URLs further support this assessment.

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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://crophysi.ru/123?utm_term=mercury+25+hp+bigfoot+4+stroke+manual In PDF document text
    • https://static.s123-cdn-static.com/uploads/4450723/normal_6007d9b2da7b1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476133/normal_5fe63710ac77f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445742/normal_602b78e1270dc.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4415046/normal_60000caa5996e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4478950/normal_5ff0f6dbb2281.pdfIn PDF document text
    • http://zomesotemaxage.66ghz.com/dibujarte_gratis.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4467277/normal_5ff0acf9677e4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4414167/normal_5feec79fa2a2c.pdfIn PDF document text
    • http://temppicture.xyz/faredamidozinizoloxepadzjd9.pdfIn PDF document text
    • http://tehnikator.ru/todukefugogijaakpsw.pdfIn PDF document text
    • http://sarhello.online/zemawemokexevajasibinsfqq.pdfIn PDF document text
    • http://prequester.online/reformed_baptist_church_wilkesboro_ncw960h.pdfIn PDF document text
    • http://kpovli.ru/how_to_flush_gallbladder_and_liverq0j2j.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4384459/normal_60062a1f0686d.pdfIn PDF document text
    • http://ellmax-site.xyz/10th_maths_guide_2020_tamil_medium_free_download4uikb.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://mutexuwe.epizy.com/zisobudijitujomom.pdfIn PDF document text
    • https://s3.amazonaws.com/vatosolikijike/68440655566.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_off00010379.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10379 6084 bytes
SHA-256: e4607b18a3b8bb5a68ac3dbf918b9d12cc39e5e73a9951b57ce858c4537c2224
font_01_sfnt_off00011829.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11829 11076 bytes
SHA-256: b6b3de91bb90f8c530a0cae17c433a67e45f8b864677aca2509a49c1b6abb596

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