Malicious PDF — malware analysis report

Static analysis result for SHA-256 ca6a08dbdf257327…

MALICIOUS

PDF

87.1 KB Created: 2021-04-11 03:58:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: be1a2e4e38f9a8b80fab6a35f3a70352 SHA-1: 791ebbcc5ffb615a8af6af1d50bbaf704e955083 SHA-256: ca6a08dbdf2573273e6d211e54fa39d67d38ce4300593f31259f5822a1951b43
136 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by ClamAV and an ML classifier. The 'SE_CLICKFIX' heuristic indicates a social engineering attack designed to trick the user into running a command, likely to download a second-stage payload. The embedded URL points to a suspicious domain, suggesting a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9989

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
  • ClickFix social engineering attack high SE_CLICKFIX
    Document instructs the user to press Win+R or paste a command into a terminal — consistent with ClickFix attacks that bypass macro restrictions by tricking users into running malicious commands directly
  • 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://jumiwimov.ru/strik?utm_term=mexican+night+clubs+in+atlanta+georgia
    • https://cdn.sqhk.co/kuxixixixi/hfjewPy/18654110426.pdf
    • https://cdn.sqhk.co/napumefu/ihQ6gfT/98920297602.pdf
    • https://static.s123-cdn-static.com/uploads/4488323/normal_5ff5b063cc298.pdf
    • https://cdn.sqhk.co/goxobuve/Y8dEicM/midasikamamarajoje.pdf
    • https://cdn-cms.f-static.net/uploads/4368218/normal_6025b50a596b9.pdf
    • https://static.s123-cdn-static.com/uploads/4455681/normal_5fee2fb65f58f.pdf
    • https://static.s123-cdn-static.com/uploads/4370052/normal_5fe41d31e20a6.pdf
    • https://cdn-cms.f-static.net/uploads/4426810/normal_605d88286a2db.pdf
    • https://cdn-cms.f-static.net/uploads/4425235/normal_6066dd710e4b2.pdf
    • https://cdn-cms.f-static.net/uploads/4451210/normal_6068b38c72713.pdf
    • https://cdn.sqhk.co/soxuvezosapa/jbkjchf/meridian_point_classic_wooden_four_in_a_row.pdf
    • https://cdn-cms.f-static.net/uploads/4404514/normal_604d9fe95be42.pdf
    • https://cdn.sqhk.co/vivupedasez/7gf6jdB/kaspersky_antivirus_free_2019.pdf
    • https://static.s123-cdn-static.com/uploads/4454550/normal_5fc6c78b8869c.pdf
    • https://cdn-cms.f-static.net/uploads/4374840/normal_5fd815ca49ab6.pdf
    • https://cdn-cms.f-static.net/uploads/4403263/normal_60631764b6a1a.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/ea3520b3-db25-4921-8db3-12b65722b966/peter_and_wendy_disneyland.pdf
    • https://s3.amazonaws.com/vibuvomomuv/transform_list_to_dict_python.pdf
    • https://s3.amazonaws.com/xomudufe/towozi.pdf
    • https://uploads.strikinglycdn.com/files/82cc79f3-c6d8-44ad-9c4d-7364422c85f1/words_their_way_free.pdf
    • https://s3.amazonaws.com/kefiperizonofu/20390010969.pdf
    • https://s3.amazonaws.com/tedowafomaru/tutorial_catia_v6_espaol.pdf
    • https://s3.amazonaws.com/jifedefujodu/murmur_of_the_heart_movie_1971.pdf
    • https://uploads.strikinglycdn.com/files/2eb40899-273c-40b8-b5c0-a3eb0ad91741/guragewujed.pdf
    • https://uploads.strikinglycdn.com/files/5c9314d2-bc14-4fc8-978a-a4c91bd8562d/bazasi.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010b4d.bin
29101dccbdd26b917ab81d9bd75cbbd6cc1355d83463c73af800c3f6313db59d
pdf-font-stream PDF embedded font (sfnt) at offset 0x10B4D 2912 bytes
font_01_sfnt_off000115b3.bin
7ccf61f05687333e08eac7efb1ca9698ccd6b8a05406292231178790257d1a9e
pdf-font-stream PDF embedded font (sfnt) at offset 0x115B3 5272 bytes
font_02_sfnt_off000127ad.bin
4b46256751f829a3965240a0dbc57ccf62d4b786d6e6cbbe567fd3b6c542700c
pdf-font-stream PDF embedded font (sfnt) at offset 0x127AD 11340 bytes