Malicious PDF — malware analysis report

Static analysis result for SHA-256 5be95f0a930d5f96…

MALICIOUS

PDF

62.0 KB Created: 2021-01-18 02:11:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 80c6959e77a07c3e73489b45610d0dbd SHA-1: 79b454e40bb0579e8a6296867260510b92d42a93 SHA-256: 5be95f0a930d5f963728a5f176deb3e9505c35ff2009c5feaa26d4113b9845a3
184 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 as malicious by multiple heuristics and a machine learning classifier. It contains numerous embedded links, with at least one pointing to known malicious redirector infrastructure. The document body, though heavily obfuscated, suggests a lure related to 'Paw patrol beach adventure game instructions', likely a pretext to entice users to click the malicious links. No scripts were extracted, but the presence of malicious links strongly indicates an attempt to redirect users to phishing or malware-hosting sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://gettraff.ru/123?utm_term=paw+patrol+beach+adventure+game+instructions In PDF document text
    • https://site-1182082.mozfiles.com/files/1182082/avira_android_apk.pdfIn PDF document text
    • https://site-1173607.mozfiles.com/files/1173607/top_christian_songs_2020_billboard.pdfIn PDF document text
    • https://wilosobofixi.weebly.com/uploads/1/3/4/8/134858013/fovape-mubixedu-wovuwufawowol.pdfIn PDF document text
    • http://fomuvegikutidob.iblogger.org/87318076420.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417983/normal_5ff78dabf374d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386333/normal_5f9f5e0337e85.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4467560/normal_5fba388dc0b6b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4462056/normal_5fa6dd399274a.pdfIn PDF document text
    • http://jigitozunawada.66ghz.com/cracking_sat_physics_subject_test.pdfIn PDF document text
    • http://tatajosak.22web.org/reading_comprehension_worksheets_ks2_year_6_free.pdfIn PDF document text
    • https://site-1173627.mozfiles.com/files/1173627/34901848424.pdfIn PDF document text
    • https://site-1173424.mozfiles.com/files/1173424/63587909879.pdfIn PDF document text
    • https://dozunetad.weebly.com/uploads/1/3/4/4/134472758/jusoxisarujopugo.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://loratozojakin.epizy.com/chrome_for_ubuntu_14.pdfIn PDF document text
    • http://derekage.epizy.com/fomabebuxola.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_off0000b627.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB627 5780 bytes
SHA-256: 3262ee2a91a47d522e503d2c454131b8bb4352611fede91544fc34934a22e96c
font_01_sfnt_off0000c9b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC9B1 9732 bytes
SHA-256: d72adc22d6248145328bc14ade182f56372e13b32abcde5fac2bf94eb50cde80

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