Malicious PDF — malware analysis report

Static analysis result for SHA-256 5f38348894ef6b69…

MALICIOUS

PDF

70.5 KB Created: 2021-01-25 07:55:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 1ee752b3099915bd45cc0ffd4a0a3496 SHA-1: e8b7df79abe7e13632cce40de42594ae540322fa SHA-256: 5f38348894ef6b6902c344af58651b7d2a3c0d89e8b56d9245628008d04e6eea
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains an embedded URI pointing to a suspicious domain, identified by heuristics and a machine learning classifier as malicious. ClamAV also detected it as a phishing trojan. While no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to redirect the user to a malicious site, likely for phishing or to download further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://maypoin.ru/123?utm_term=construction+management+halpin+pdf PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4424953/normal_60041467c03df.pdfIn PDF document text
    • http://ropufogesuzazeg.iblogger.org/ash_vte_guidelines_2018.pdfIn PDF document text
    • http://nature-ital.space/kizofimipibulufezenadusu62dd4.pdfIn PDF document text
    • http://repair-kvadrokopterov.ru/xizomefuvonegahv956.pdfIn PDF document text
    • http://vevolim.iblogger.org/connected._mcgraw-_hill_answer_key_algebra_1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446924/normal_5fe3ae2f3bd43.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4401694/normal_5fe27f34f0a4f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4483856/normal_5fc9b545b1d38.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4490125/normal_5ffdb7aa7e79d.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://ligesetuvijaga.epizy.com/36638548512.pdfIn PDF document text
    • https://s3.amazonaws.com/luropiw/invite_wedding_templates_free.pdfIn PDF document text
    • http://xubedoper.epizy.com/ruligifetibuwakalejupeji.pdfIn PDF document text
    • https://s3.amazonaws.com/votuweroxigezog/centrifugal_pump_construction.pdfIn PDF document text
    • http://xofiketur.rf.gd/17247892315.pdfIn PDF document text
    • https://s3.amazonaws.com/vokeri/huf_pan_card_affidavit_format_in_word.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d73c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD73C 5476 bytes
SHA-256: 843afb31311b9e3c4b329d06b8da4b4246bf5fd4610a59db83130881c3b98802
font_01_sfnt_off0000e9a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9A9 10368 bytes
SHA-256: 8196d6b8bd24cfbf0459abc3032bd72e4d0eb602abec8beb029885535aac9c76

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