Malicious PDF — malware analysis report

Static analysis result for SHA-256 c02415e33947121b…

MALICIOUS

PDF

67.2 KB Created: 2021-02-21 19:00:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 88298d2493cc80d7301b7fb5733d06e1 SHA-1: 708d18e0381527d24c0bb611b7a923f836cd6429 SHA-256: c02415e33947121b9c05b9125f3e6859420f74c3989bc05b4058079cc888efcf
214 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, with one identified as a malicious redirector. The heuristic firings indicate this PDF is part of a link farm and is flagged as malicious by ML classifiers and ClamAV. The document body, though partially obfuscated, suggests a lure related to technical instructions, likely to encourage clicks on the malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://yafferge.ru/123?utm_term=how+to+reset+airport+base+station In PDF document text
    • https://wawogikaso.weebly.com/uploads/1/3/4/7/134726687/sipuzewumepewanome.pdfIn PDF document text
    • https://cdn.sqhk.co/lilaxikixo/gqsZejg/34402425700.pdfIn PDF document text
    • https://cdn.sqhk.co/gefimiwotux/haxPQie/94091046155.pdfIn PDF document text
    • https://cdn.sqhk.co/vagofedewat/jjjicNT/vodafone_yan_mda_guvenlik_kodu_gelmiyor.pdfIn PDF document text
    • https://cdn.sqhk.co/gesuxafom/icu8oic/54249437413.pdfIn PDF document text
    • https://jojapewabivato.weebly.com/uploads/1/3/1/3/131379205/tafevozolevizes.pdfIn PDF document text
    • https://cdn.sqhk.co/jolodovi/fmhe397/infection_prevention_and_control_strategic_plan.pdfIn PDF document text
    • http://likelid.xyz/game_horror_pacify_androidmtqir.pdfIn PDF document text
    • http://habercigo.com/vomodegotikexedinesajrydm.pdfIn PDF document text
    • https://cdn.sqhk.co/guxudakakali/iaYryhb/global_warming_vs_climate_change_difference.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/satulibaren/tawomoposivazodaviloguvoj.pdfIn PDF document text
    • https://s3.amazonaws.com/tajimipojimo/94978647760.pdfIn PDF document text
    • https://s3.amazonaws.com/jiwotarotavuz/metformin_extended_release_vs_metformin.pdfIn PDF document text
    • https://s3.amazonaws.com/remavuj/bhojpuri_movie_new_2018_mp4.pdfIn PDF document text
    • https://s3.amazonaws.com/pidufozu/12966464505.pdfIn PDF document text
    • https://s3.amazonaws.com/xomepixo/97780134207.pdfIn PDF document text
    • https://s3.amazonaws.com/jesidofefe/doxoxatuxi.pdfIn PDF document text
    • https://s3.amazonaws.com/nalifij/37532294535.pdfIn PDF document text
    • https://s3.amazonaws.com/fejatepudopito/dazn_italia_tv_guide.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_off0000cba3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCBA3 4976 bytes
SHA-256: 6d748ff202c55e5fdee8443c07575a2fe4fd89ac58edc423763bd30ccdd3c9bc
font_01_sfnt_off0000dca4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCA4 10244 bytes
SHA-256: f08fd9ddbc7df4241d25b07261ca199c55ebcce499c73db26b3f7dccdefd0b40

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