Malicious PDF — malware analysis report

Static analysis result for SHA-256 d96196547d62a2b5…

MALICIOUS

PDF

94.5 KB Created: 2020-11-11 15:45:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 88ae4214dbe284237370000413519445 SHA-1: bdb3ac367b60df1326b4f8b6c41b85f027971246 SHA-256: d96196547d62a2b5ccbac48ad8a6fcc782145a300f0c6d3282a6fd6d9d393fec
214 Risk Score

Malware Insights

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

This PDF file contains numerous embedded links, many of which point to external resources. One critical heuristic identified a link to known malicious redirector infrastructure (traffine.ru), suggesting an attempt to lead the user to a malicious site. The presence of a large number of PDF links, some with numeric slugs, indicates a potential SEO link farm or a method to distribute malicious content. The ML classifier and ClamAV detection further support the malicious nature of this file.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://traffine.ru/wb?keyword=qwop%20unblocked%20games%2066%20at%20school In PDF document text
    • https://suvenalopevoku.weebly.com/uploads/1/3/4/5/134510495/lasadalikolos.pdfIn PDF document text
    • http://www.opentle.orgIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/fokapikow/61944467550.pdfIn PDF document text
    • https://s3.amazonaws.com/lewuli/lenezike.pdfIn PDF document text
    • https://s3.amazonaws.com/tiluwisulepam/mapa_politico_de_puerto_rico_significado.pdfIn PDF document text
    • https://s3.amazonaws.com/bejokazemur/america_vs_atlanta_united_en_vivo.pdfIn PDF document text
    • https://s3.amazonaws.com/pusolefosex/roblox_scripts_2020_pack.pdfIn PDF document text
    • https://s3.amazonaws.com/wegemebufojafak/72101613439.pdfIn PDF document text
    • https://s3.amazonaws.com/serogajugomiji/simpsons_tapped_out_unlimited_donuts.pdfIn PDF document text
    • https://s3.amazonaws.com/pafiganovavi/83677192127.pdfIn PDF document text
    • https://s3.amazonaws.com/zonebon/10th_maths_guide_tamil_medium_download.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://www.gnu.org/licenses/gpl.htmlIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off0001198d.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x1198D 17396 bytes
SHA-256: 10500045f9ca562c080c0875c6c2e4acae9eeeb605beab668abafd030106b8b6
font_00_sfnt_off00010599.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10599 5900 bytes
SHA-256: 438376b20f7b30bcdf33e6a22229f2ad82c04986661255bfbb2fd281c960e0a6
font_02_sfnt_off00014830.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14830 10888 bytes
SHA-256: 0899edbab23c63f30a71f7d6bb236650e91d8bf112be585092575430f6d68aea

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