Malicious PDF — malware analysis report

Static analysis result for SHA-256 3f0b82a574347883…

MALICIOUS

PDF

90.8 KB Created: 2021-02-20 06:02:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 8a55a36fd52ab9cf31ed167374af29d3 SHA-1: c7df1b600760477ea77abfe32d32ba04209e74d5 SHA-256: 3f0b82a574347883b82bc0f6ce38bc27bdeb05662f5f7fa917d379b2f7ce0a08
222 Risk Score

Malware Insights

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

This PDF file contains numerous embedded links, many of which point to known malicious redirector infrastructure and link farms. The document body, though heavily obfuscated, appears to be a lure related to 'Beats by dre solo 3 pro', suggesting a phishing or malware distribution attempt. The presence of multiple malicious links and the ML classifier's high confidence score indicate a strong likelihood of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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/aws?utm_term=beats+by+dre+solo+3+pro In PDF document text
    • https://zomurudol.weebly.com/uploads/1/3/4/4/134492975/2481764.pdfIn PDF document text
    • https://menuzuxa.weebly.com/uploads/1/3/1/0/131070619/mememof_werew_pilot.pdfIn PDF document text
    • https://gipimosikiji.weebly.com/uploads/1/3/5/9/135963651/533f01c.pdfIn PDF document text
    • https://revixapega.weebly.com/uploads/1/3/4/6/134619396/9ec43.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476152/normal_6027d34cb49af.pdfIn PDF document text
    • https://zelowomuguzak.weebly.com/uploads/1/3/1/3/131379017/zujodapewefe.pdfIn PDF document text
    • https://zowajapizuxazo.weebly.com/uploads/1/3/0/9/130969341/zurelutanusapag-vosewogiw.pdfIn PDF document text
    • https://suwuvonujijipi.weebly.com/uploads/1/3/4/0/134042364/niwegizabatezil_zemokimumiw_winuterupuzup.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4411480/normal_5ffdc69e3759a.pdfIn PDF document text
    • https://wixotavu.weebly.com/uploads/1/3/4/7/134764887/pirumebas.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413977/normal_5ff06c07839b1.pdfIn PDF document text
    • https://cdn.sqhk.co/zabadiripo/4WpWwac/live_channels_android_tv_iptv.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/roware/33612427474.pdfIn PDF document text
    • https://s3.amazonaws.com/vonusirukete/google_world_map_with_longitude_and_latitude_lines.pdfIn PDF document text
    • https://s3.amazonaws.com/mavixu/eddystone_url_android.pdfIn PDF document text
    • https://s3.amazonaws.com/wuvepilamamuse/report_reckless_driving_nyc.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_off00012570.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12570 5408 bytes
SHA-256: 6b28a4391c988ce9cb4b76caadcc587c724cc79eda931859e91f2716740fc772
font_01_sfnt_off000137df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x137DF 11312 bytes
SHA-256: a22f4561a19320b5a1b36fb1a50bf4a88e55aa05371afb627c5ea7a5c8f89325

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