Malicious PDF — malware analysis report

Static analysis result for SHA-256 561c105630192c00…

MALICIOUS

PDF

109.4 KB Created: 2021-01-21 02:44:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: 5b8fa47a1b7108dbbd35551019acd4d9 SHA-1: 164eed499f6d9d70a449334b2687dabb49bda58c SHA-256: 561c105630192c00725eecb91d0326faf9d86fc25044521572d19a0cc9f23e42
184 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains a large number of external links, many hosted on disposable domains, suggesting a link farm or phishing operation. The document body, though heavily obfuscated, contains text related to 'Nys mandated reporter training requirements', likely a lure to encourage clicks on the embedded malicious URLs. No scripts were extracted, but the PDF structure and numerous external links strongly indicate a malicious intent to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8950

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
  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://maypoin.ru/aws?utm_term=nys+mandated+reporter+training+requirements PDF link annotation
    • https://cdn.sqhk.co/lulaxujik/AngdjeO/fedoxa.pdfIn PDF document text
    • https://site-1244783.mozfiles.com/files/1244783/chuck_tv_series_episode_guide.pdfIn PDF document text
    • https://naxulukituno.weebly.com/uploads/1/3/4/8/134879135/1795710.pdfIn PDF document text
    • https://site-1171574.mozfiles.com/files/1171574/77773727657.pdfIn PDF document text
    • https://fakipaga.weebly.com/uploads/1/3/1/1/131163599/fba1c548cc.pdfIn PDF document text
    • https://cdn.sqhk.co/pegidago/AhiiUxZ/epic_card_game_deck_box.pdfIn PDF document text
    • https://cdn.sqhk.co/vegubefeno/dOienP5/ocoee_river_whitewater_rafting_videos.pdfIn PDF document text
    • https://dasezakam.weebly.com/uploads/1/3/4/8/134883145/tixiwedilo-kebezagar-magabesepafen.pdfIn PDF document text
    • https://nosozekime.weebly.com/uploads/1/3/4/6/134634018/d73609483a5df.pdfIn PDF document text
    • https://cdn.sqhk.co/fivukidado/b2hjkhj/angry_birds_2_tips_2020.pdfIn PDF document text
    • https://cdn.sqhk.co/nawovoso/bSWMyif/ivan_the_gorilla_film_cast.pdfIn PDF document text
    • https://cdn.sqhk.co/nitunoda/dhcwhg4/53671959647.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4466675/normal_5fd17594d9b3f.pdfIn PDF document text
    • http://lutefofojonu.iblogger.org/31017290074.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4484806/normal_5fcbd31ea0fd4.pdfIn PDF document text
    • https://site-1257339.mozfiles.com/files/1257339/ladedajufinu.pdfIn PDF document text
    • http://disupenepoka.epizy.com/11772512351.pdfIn PDF document text
    • http://sufumawug.epizy.com/windows_10_professional_activator_free.pdfIn PDF document text
    • http://zukisofom.epizy.com/blue_prism_certification_questions.pdfIn PDF document text