Malicious PDF — malware analysis report

Static analysis result for SHA-256 c3a8e63c623b219b…

MALICIOUS

PDF

69.2 KB Created: 2021-02-09 19:29:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 634112510b811a751065b0c40e4eabf1 SHA-1: b92c56335bcb9e390e667673dbcb79a33b765f35 SHA-256: c3a8e63c623b219b0fbe5b8caf755f11ba6d11b5669de1430b25af64a214c08d
156 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many of which point to potentially malicious domains, indicating a link farm or phishing attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. While no scripts were explicitly extracted, the PDF structure and numerous external URLs are indicative of a phishing or malware distribution scheme.

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
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://jottigo.ru/aws?utm_term=knight+frank+sydney+cbd+office+market+report PDF link annotation
    • http://supsun-aero.com/tupavajomuwvyyd3.pdfIn PDF document text
    • https://cdn.sqhk.co/jagugide/UYkgegc/72148370739.pdfIn PDF document text
    • https://cdn.sqhk.co/repejuvovod/jhahff1/air_strike_ww2_fighters_sky_combat_attack_mod.pdfIn PDF document text
    • https://cdn.sqhk.co/dutaxato/XbgehbE/open_source_online_compiler_api.pdfIn PDF document text
    • http://options.expert/indian_advertising_agency_profile32bpa.pdfIn PDF document text
    • http://healthbeauty24.online/realcalc_scientific_calculator_apk_freevg3hs.pdfIn PDF document text
    • https://cdn.sqhk.co/mapexovebo/hhj2nhe/bedawisilebema.pdfIn PDF document text
    • http://hook-up.fun/msguides_windows_7_activationr92if.pdfIn PDF document text
    • https://nukawopuriw.weebly.com/uploads/1/3/4/3/134347541/3898672.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/zumezeviwakiz/netflix_chromecast_android_problem.pdfIn PDF document text
    • https://s3.amazonaws.com/jevedijadiki/27316918002.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_off0000d119.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD119 5812 bytes
SHA-256: 708a1b32818d96cfc5fa0d750b69804cc57ddd92a330bba91b6ef9112cde6d3f
font_01_sfnt_off0000e4cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4CC 10376 bytes
SHA-256: 2bfac9827dcbf5f792d942b8c12fe61c1a38569601c5fca62dbfdd5a7d75d30c

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