Malicious PDF — malware analysis report

Static analysis result for SHA-256 d6517b307d05c8a9…

MALICIOUS

PDF

82.4 KB Created: 2021-02-22 17:35:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: c4496f3a94539746544d89f607726400 SHA-1: b1cfea02fee176a66611a87291e345cdbebd54c7 SHA-256: d6517b307d05c8a956c619a1f00e91dbec72ee203d0e2637a2c6fa766208e6af
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous external URLs, many of which are hosted on disposable domains or link farms, suggesting a phishing or malware distribution campaign. The presence of embedded URLs and the overall structure indicate an attempt to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://jacksth.ru/strik?utm_term=arabic+vocabulary+pdf+free PDF link annotation
    • https://gojudewusidaza.weebly.com/uploads/1/3/4/8/134888042/julolunoji-rudefipasoguj-tifadojepedewu-jarosoxedolux.pdfIn PDF document text
    • http://bitjoms.xyz/13344777568z738c.pdfIn PDF document text
    • https://rolutadaneked.weebly.com/uploads/1/3/2/6/132681657/6e73217.pdfIn PDF document text
    • http://drive4mclaneeffingham.com/36495186718wxkac.pdfIn PDF document text
    • http://acupofjacob.com/how_to_change_pump_oil_on_generac_pressure_washery1e62.pdfIn PDF document text
    • http://adanakebap.org/biblia_copywritingu_chomikujggxub.pdfIn PDF document text
    • http://zalavsky.ru/convertidor_de_youtube_a_mp3_xd_gratisx5b1d.pdfIn PDF document text
    • http://bestsalestoday.xyz/manaliz98eoi.pdfIn PDF document text
    • http://fito4ka.xyz/human_anatomy_pro_apk_free8ts72.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489835/normal_602ba252678b2.pdfIn PDF document text
    • https://dawirusopu.weebly.com/uploads/1/3/2/3/132303146/vapabisiboliroduj.pdfIn PDF document text
    • https://butilitari.weebly.com/uploads/1/3/3/9/133997497/nobivig.pdfIn PDF document text
    • http://snatural.space/tactical_battle_simulator_mod_apk9y6j0.pdfIn PDF document text
    • http://characduwe.space/timeline_diagram_template_wordec5xl.pdfIn PDF document text
    • http://geesecam.com/kemonaxeluserorj7mq4.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e322.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE322 5264 bytes
SHA-256: e8050ebf521543880814db3056ab764bf38684e0bfdb4ca27ac8b47e7cbb90d2
font_01_sfnt_off0000f51c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF51C 2400 bytes
SHA-256: 0fc404c2514de3568c8be366b9a7386dc9ce78315585e608ee5b81c6fd34c92d
font_02_sfnt_off0000ff9f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF9F 10884 bytes
SHA-256: be90fb2a811a18c91b18d001e280bfe9817aca0b77288d3be0f7c2cc6ba5d345
font_03_sfnt_off000124c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x124C6 16676 bytes
SHA-256: 6a83abadcffee6bc0d4f2628890d49ca7d2e684b7e9055ce2a8f05cd05ce0a44

Open this report in the interactive analyzer, or submit your own file for analysis.