Malicious PDF — malware analysis report

Static analysis result for SHA-256 38ca4417654fd7c5…

MALICIOUS

PDF

76.1 KB Created: 2021-03-11 09:10:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-04
MD5: 33bc35f9e126b3eeb5de80f05e76ae13 SHA-1: d501ab44f4d25f857d3548aa055460e23aa6bea0 SHA-256: 38ca4417654fd7c5fcce69661a96d9e0735bf39713da06b35f7585723cfd831c
126 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier indicating maliciousness. It contains numerous embedded URLs, many pointing to disposable hosting, suggesting a link farm or phishing attempt. The presence of external URIs and the overall detection pattern align with a malicious PDF designed to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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
  • 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://botokaw.ru/award?keyword=envasado+en+atmosfera+modificada+pdf PDF link annotation
    • https://cdn.sqhk.co/jomububorava/6zk43xs/bivuwoxisovedirotevixe.pdfIn PDF document text
    • http://sawedes.mywebcommunity.org/ge_low_profile_over_the_range_microwave_white.pdfIn PDF document text
    • http://citimart.online/droites_parallles_et_perpendiculaires_6me_exercicesyj114.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4469135/normal_60079b531cacc.pdfIn PDF document text
    • http://tevfikyuce.xyz/892413925992ctaq.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4482619/normal_5fdb6fb7e3b37.pdfIn PDF document text
    • https://cdn.sqhk.co/norasoketika/iijhijf/wukoxosegigige.pdfIn PDF document text
    • https://cdn.sqhk.co/xakelafu/Xa1hgT5/47867024950.pdfIn PDF document text
    • http://itanah.space/sabarawevumez464m5.pdfIn PDF document text
    • https://cdn.sqhk.co/bulixanejad/jMmjdwD/final_fantasy_xv_ps4_store.pdfIn PDF document text
    • http://wonder-ita.space/77449279607vhcum.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4493610/normal_60469c4e8c6f0.pdfIn PDF document text
    • http://fijexojor.getenjoyment.net/26344374932.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4477400/normal_5ff75d45f3b5f.pdfIn PDF document text
    • http://bridgecommerce.com/how_to_desire_god_more_than_anythingp2uza.pdfIn PDF document text
    • https://cdn.sqhk.co/favosejo/sh0haif/redskins_depth_chart_2019.pdfIn PDF document text
    • https://cdn.sqhk.co/zufuxirap/hjerjaf/gexafuvizemulalusameb.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://sabiwilurase.atwebpages.com/beowulf_telugu_dubbed_movie_free_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3a5348eb-64c9-4af1-a4e3-dde6de591eb4/16695981286.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fabcdea0-7e71-4be5-93a3-e8d0b2325a2e/comentario_biblico_john_macarthur_apocalipsis.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9ccbc46a-d7ff-4644-83d4-5d23f0dff7bf/fefelexididazuzanix.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_off0000e9c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9C6 5284 bytes
SHA-256: 8602c4e155453ad59ed39d3e3196a22a9b35b342cf1cf6ec4681d6a1ce26f175
font_01_sfnt_off0000fbb7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFBB7 11556 bytes
SHA-256: daba91f354d0ae28a7377a25c267381b9541860c6376f579470a4366480ca40b

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