Malicious PDF — malware analysis report

Static analysis result for SHA-256 e2cd99acdb26a176…

MALICIOUS

PDF

73.4 KB Created: 2021-03-20 14:30:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: 4e8bb993d8ec8c296701b0c948eea940 SHA-1: 625caed31fcdd99904cf32c11387d85bf718a452 SHA-256: e2cd99acdb26a176850fc463ff8e5c812bebfff69edabe765d37f8dd4c6c6161
124 Risk Score

Malware Insights

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

The PDF file contains multiple embedded URLs and is flagged by heuristics as a link farm on disposable hosting, indicating a malicious intent to redirect users. The ML classifier and ClamAV detection strongly suggest this PDF is malicious, likely a phishing or malware distribution lure. Although no scripts were explicitly extracted, the presence of embedded URLs and the nature of the heuristics point towards an attempt to direct users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8072

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 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://dugedepap.ru/award?keyword=anti+epilepsy+drugs+pdf PDF link annotation
    • http://nizavevorupuj.mywebcommunity.org/76940158885.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4427498/normal_5fe16087c446a.pdfIn PDF document text
    • https://cdn.sqhk.co/togareguko/ge4xLii/maharashtra_ssc_board_syllabus_10th_2019-_20.pdfIn PDF document text
    • https://mujamixoto.weebly.com/uploads/1/3/0/7/130776872/pavafadegikajaji.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489713/normal_60382106a1a5b.pdfIn PDF document text
    • https://cdn.sqhk.co/zirigajer/0EmijE1/social_media_marketing_calendar_2018_template.pdfIn PDF document text
    • http://kapovulup.mywebcommunity.org/what_is_the_slanted_tip_of_a_needle_called.pdfIn PDF document text
    • https://fikuzafunowu.weebly.com/uploads/1/3/1/8/131857523/jifowidopoda.pdfIn PDF document text
    • http://lorakuze.sportsontheweb.net/49395146712.pdfIn PDF document text
    • https://cdn.sqhk.co/degamuwubela/igidOjd/potion_explosion_strategy.pdfIn PDF document text
    • https://cdn.sqhk.co/rasepotobami/L2Hhagi/quran_teaching_online_registration.pdfIn PDF document text
    • https://cdn.sqhk.co/japuwejede/digjhlz/34125603863.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4394073/normal_5ff024c800e2b.pdfIn PDF document text
    • http://tozidak.mygamesonline.org/charing_cross_hospital_map.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445742/normal_60359563b2787.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4459625/normal_5fe4fa972ad99.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://550dfcec-0280-4316-a0d5-68b74a7a20b9.filesusr.com/ugd/f59309_79b03bec41144f7bb70aac47f9195c9e.pdf?index=trueIn PDF document text
    • http://xutenasejubibe.atwebpages.com/42812139824.pdfIn PDF document text
    • http://rogofideb.onlinewebshop.net/how_to_reset_a_frozen_kindle_keyboard.pdfIn PDF document text
    • https://2e81f42f-67f9-46a9-89e2-a5f3ab3b03ee.filesusr.com/ugd/f138f5_51a9c08495b143c89a8cef6947ac30b6.pdf?index=trueIn PDF document text
    • http://kepewitibafef.myartsonline.com/wemofelomotituba.pdfIn PDF document text
    • http://tefetuzuzip.myartsonline.com/descargar_google_traductor_ingles_espaol_espaol_ingles_gratis.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_off0001076e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1076E 5092 bytes
SHA-256: d441481fdf927449b9cf19c3a9b3ad77c68d80491ca70b4f3afde1b5c8dd74bc

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