Malicious PDF — malware analysis report

Static analysis result for SHA-256 19e11435ac9b1553…

MALICIOUS

PDF

78.0 KB Created: 2021-02-16 01:03:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 73de7d136a0fb99ecb496239254cd692 SHA-1: 89d97941bfcd6080f8298cff13f794190eaa0252 SHA-256: 19e11435ac9b1553543745e744cb3dffbf0b1c82cc4bb6a4018ad7a2622a47c8
244 Risk Score

Malware Insights

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

This PDF file contains a large number of embedded links, many pointing to disposable hosting services, designed to create a link farm. The primary link directs users to a known malicious redirector, likely to distribute malware or conduct phishing. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as a phishing trojan.

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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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/wb?keyword=maytag%203000%20series%20washer%20f%2020 In PDF document text
    • https://rezezeveg.weebly.com/uploads/1/3/1/8/131871466/6459194.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4381534/normal_5fe2790328497.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388426/normal_6019b181a7867.pdfIn PDF document text
    • https://vojidejera.weebly.com/uploads/1/3/2/6/132695434/8994449.pdfIn PDF document text
    • https://latimemoniborij.weebly.com/uploads/1/3/1/4/131437487/gubedo.pdfIn PDF document text
    • https://xonokuraku.weebly.com/uploads/1/3/3/9/133988937/morujogavogamivorol.pdfIn PDF document text
    • https://cdn.sqhk.co/vagekoxes/kjhfojf/real_cricket_20_3._3_mod_apk_download.pdfIn PDF document text
    • https://cdn.sqhk.co/mejomusajob/heEhcK2/37164753956.pdfIn PDF document text
    • https://cdn.sqhk.co/suxupijisajo/jh4jhrQ/vegan_christmas_cake_recipe_gluten_free.pdfIn PDF document text
    • https://peneredexamoje.weebly.com/uploads/1/3/1/4/131407565/79884026b06ff.pdfIn PDF document text
    • https://gadabuji.weebly.com/uploads/1/3/4/7/134715747/c7d41da298f.pdfIn PDF document text
    • https://sadusanolomu.weebly.com/uploads/1/3/4/6/134646393/zenovejup.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4391898/normal_5fe13940e4a9a.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xepadegi.epizy.com/drip_irrigation_system_project.pdfIn PDF document text
    • http://wisunomimat.epizy.com/roboto_bold_font_free.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_off0000f362.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF362 5632 bytes
SHA-256: ad970fd09395dbd1023f696dd9a2277d5b80ba84179dad5d2b2c6a2b9f10465f
font_01_sfnt_off000106b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x106B8 10844 bytes
SHA-256: 233ada11904cfbf9c8fb9e3780a58b9885f1a2a54b86812da2e2ad09be3bf552

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