Malicious PDF — malware analysis report

Static analysis result for SHA-256 d93f6066d1b79342…

MALICIOUS

PDF

75.7 KB Created: 2021-03-02 20:24:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: a2eb1c6051f997ede412dbd1cf4a6afb SHA-1: efb8d3244a00f0db37b89189173d5016a72e88a6 SHA-256: d93f6066d1b793421fec1d8e56bfb011ac47213cb812258466c52371f8027823
186 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The document contains numerous external links, many hosted on disposable domains, suggesting a link farm or phishing lure. The embedded URL 'https://ponafet.ru/123?utm_term=focusrite+scarlett+6i6+driver+download+windows+7' specifically targets users searching for drivers, a common social engineering tactic. No scripts were extracted, but the PDF structure and numerous external links point towards a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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 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.
  • 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://ponafet.ru/123?utm_term=focusrite+scarlett+6i6+driver+download+windows+7 PDF link annotation
    • https://cdn.sqhk.co/jidulopavoji/hahhuIm/bazekaruxidiwupe.pdfIn PDF document text
    • http://itawegan.space/ridgid_spindle_sander_drums9xydm.pdfIn PDF document text
    • https://cdn.sqhk.co/woxiwovar/YIlPThe/mindspring_memories_binary_ocean_vinyl.pdfIn PDF document text
    • https://cdn.sqhk.co/nobixapo/hijaHgD/mipomi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381539/normal_602ab76a80d46.pdfIn PDF document text
    • https://cdn.sqhk.co/pugalaleluti/jghhiaa/kigonekutebetofisikepo.pdfIn PDF document text
    • https://cdn.sqhk.co/lepavenujal/B2tX5jb/the_light_between_oceans_book_summary.pdfIn PDF document text
    • https://xumodaniteged.weebly.com/uploads/1/3/4/4/134480563/bijuw_noxejafimamoduk_bunogojafozon.pdfIn PDF document text
    • https://cdn.sqhk.co/nizivatitogu/ah7jdRZ/30742058238.pdfIn PDF document text
    • https://cdn.sqhk.co/tefazaturar/8O18je3/59519442486.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386087/normal_5fe92f14357d4.pdfIn PDF document text
    • https://cdn.sqhk.co/lididiregi/AiejgWo/kodi_builds_for_xbox_one_18._5.pdfIn PDF document text
    • https://rudozusaviso.weebly.com/uploads/1/3/4/0/134041113/6caa1739e.pdfIn PDF document text
    • https://cdn.sqhk.co/jujejorule/YichgZB/top_songs_2019_playlist_clean_youtube.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://wulemarodexik.rf.gd/60781687830.pdfIn PDF document text
    • http://jepojofugag.rf.gd/react_vs_angular_performance_benchmark.pdfIn PDF document text
    • http://nimunofat.epizy.com/91375473327.pdfIn PDF document text
    • http://xirugole.epizy.com/85396980238.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_off0000ec0f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC0F 5276 bytes
SHA-256: 67ed81a6acbccaca91e4a96a41e891d8e59946e62064a7c1addb0745b25ba525
font_01_sfnt_off0000fe2a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE2A 10380 bytes
SHA-256: 92a3c8afa26bbe04d93020eaca4afc5b04c06e465c94a472210d27a460d213e7

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