Malicious PDF — malware analysis report

Static analysis result for SHA-256 027cb2a209b3ba9f…

MALICIOUS

PDF

52.6 KB Created: 2020-12-16 20:18:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 36a71e0be9560ff40745c372f556bd6d SHA-1: d0c9a5ff0fbcd881673e943b41127d8e25c9ed37 SHA-256: 027cb2a209b3ba9fd86d3ab70c275857c8b987a61e13fe72050e7d16f275b975
154 Risk Score

Malware Insights

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

The PDF contains a large number of external links, identified as a 'PDF SEO Link Farm', suggesting a malicious intent to manipulate search results or distribute further content. One of the extracted URLs, 'https://traffking.ru/strik?utm_term=ds+emulator+apk+full', is suspicious and likely leads to a malicious payload or phishing site. The ClamAV detection and ML classifier also indicate maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8697

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://traffking.ru/strik?utm_term=ds+emulator+apk+full PDF link annotation
    • https://buxudirikebipur.weebly.com/uploads/1/3/1/1/131164004/niremedezewid-pukugurekosa-gonuzeti-zuterixisibun.pdfIn PDF document text
    • https://lulotabo.weebly.com/uploads/1/3/4/7/134745182/f66b337729dbb6.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/551b67ec-ffa3-4e74-9dc6-0fcc121b1d02/shin_etsu_kf_96_msds.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a609d4b5-18bc-4bdc-a1f3-db28352ac50e/51207695668.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc2ca3a3dfdd95b60e15de0/t/5fd0d6a7ef76c20f2d533e86/1607521964266/dejelukexu.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0f2f6c89e1c4b8fbea157/t/5fc15b2a7acac6192af36c2f/1606507306964/squip_seats_be_more_chill.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc2adf9abaecd33182da937/t/5fcfede78157c143f19c4cc1/1607462376030/murder_mall_escape_part_1.pdfIn PDF document text
    • https://s3.amazonaws.com/pipaneku/central_tendency_worksheet.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc64f3160f2895dc10cb146/t/5fc8d66426a3037b4345e364/1606997605922/69007203530.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc6fe89778af068263bdf77/t/5fd758830f11661d4c497ed6/1607948420039/energy_australia_gas_connection_form.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc53c1cf7cf8c7540473628/t/5fc8424ad32d012678f39e0d/1606959692814/top_hits_of_the_50s_and_60s.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7f0d7eec-347a-487a-b59b-ab3cecebec01/monisax.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a0e9a73a-dc47-448a-91fe-dda06c0b4750/dbd_self_care_2020.pdfIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c25c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC25C 5112 bytes
SHA-256: d9824a31e9c5973b2f5bed821f803c4b19971bdab9b5f814d78c347462a5ea11