Malicious PDF — malware analysis report

Static analysis result for SHA-256 fb21ce311f8f8d77…

MALICIOUS

PDF

83.9 KB Created: 2021-03-14 13:48:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: cb4e2343a754b15550de61941b3f460a SHA-1: b189d504ca097aa9c98029367746e32178e77a8d SHA-256: fb21ce311f8f8d77f408446f82c81635c3b32248e2af51357af0145654909354
156 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, exhibiting characteristics of a phishing lure. It contains a large number of external links, many pointing to PDF files hosted on Weebly and other platforms, suggesting a link farm designed to distribute malware or redirect users to phishing sites. The document body, though partially corrupted, contains references to 'Garmin n 0 1vi 255 kartenupdate kostenlos', indicating a likely pretext for users to download further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 5

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://resalured.ru/strik?utm_term=garmin+n%25C3%25BCvi+255+kartenupdate+kostenlos
    • https://zulijijala.weebly.com/uploads/1/3/0/7/130740393/dakofidenejubufuwepi.pdf
    • https://wulukapuw.weebly.com/uploads/1/3/0/7/130740123/mepibap-jevasulab-zafusoxerorum-lefivudaxilomug.pdf
    • https://rirosivipoxutu.weebly.com/uploads/1/3/2/3/132302830/22559589.pdf
    • https://latewumopinigan.weebly.com/uploads/1/3/4/3/134313498/24eb456a8e2079e.pdf
    • https://static.s123-cdn-static.com/uploads/4468286/normal_5fc9853870acc.pdf
    • https://static.s123-cdn-static.com/uploads/4365620/normal_5ffe2899a11bf.pdf
    • https://cdn.sqhk.co/nakunadubux/gehWejj/radug.pdf
    • http://snapchat-alert.com/kajovoa12d7.pdf
    • https://cdn.sqhk.co/bilanogakiw/fnsgjhf/calligraphy_font_free_for_mac.pdf
    • http://lovelyhouse.online/731541036109cpqz.pdf
    • https://mogilifus.weebly.com/uploads/1/3/0/7/130739831/5910573.pdf
    • https://gepavemu.weebly.com/uploads/1/3/4/8/134861499/7015969.pdf
    • http://kvrovk.xyz/fafosukamefararunupokd7hk.pdf
    • https://cdn.sqhk.co/daborofus/jjluLjb/dodakukugexamabavom.pdf
    • https://safodejinuvi.weebly.com/uploads/1/3/4/7/134753113/wosid.pdf
    • https://tokegomobox.weebly.com/uploads/1/3/4/3/134314144/sadovenexorit_nemedarozebaw_buxipu_jigukujo.pdf
    • http://allostar.buzz/resumen_del_libro_11_minutos_paulo_coelhoatpmv.pdf
    • https://zetovesejideze.weebly.com/uploads/1/3/1/4/131482946/laxogavuxok.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://meguribezupi.epizy.com/funapunulubipena.pdf
    • http://davojuke.epizy.com/startup_convertible_debt_term_sheet.pdf
    • http://jijetebum.epizy.com/82904203029.pdf
    • http://vowonedof.epizy.com/pogifawupolaj.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eda1.bin
65b7766abece689ce4d3e2b116bf2ed800f8574205f88f0549b4c50ba656b034		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEDA1 5636 bytes
font_01_sfnt_off0001008f.bin
a9b57a22993a57283aee763ce9fbf604e88e71bd190ef5594dacc28561c5a001		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1008F 12612 bytes
font_02_sfnt_off000129af.bin
49363961518c22304475650089b58ccc0a939fe3567f50649b09930316f50b5e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x129AF 16476 bytes

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