Malicious PDF — malware analysis report

Static analysis result for SHA-256 049d0981b92e47a5…

MALICIOUS

PDF

73.5 KB Created: 2021-01-10 02:59:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: ee17f9b290b2297dd0dd79a3cdfe3cbb SHA-1: d2437f6a4aec307b342ec4b6db07d393022eed0a SHA-256: 049d0981b92e47a5e15763ce88371379d41ccdfc0305e796bd54a60cf1c143f5
184 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file is classified as malicious by ML and ClamAV, and contains a critical heuristic firing for a malicious redirector link. The document body, though heavily obfuscated, suggests a lure related to 'Set default template powerpoint 2016 mac'. The embedded URL 'https://cctraff.ru/aws?utm_term=set+default+template+powerpoint+2016+mac' likely leads to a phishing or malware distribution site, aligning with the characteristics of a spearphishing attachment attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://cctraff.ru/aws?utm_term=set+default+template+powerpoint+2016+mac In PDF document text
    • https://static.s123-cdn-static.com/uploads/4459058/normal_5ff356064b86a.pdfIn PDF document text
    • https://site-1166042.mozfiles.com/files/1166042/49482716077.pdfIn PDF document text
    • https://site-1174847.mozfiles.com/files/1174847/tennessee_titans_covid_players_list.pdfIn PDF document text
    • https://site-1168118.mozfiles.com/files/1168118/mailchimp_annual_report.pdfIn PDF document text
    • https://site-1167973.mozfiles.com/files/1167973/7461166101.pdfIn PDF document text
    • https://site-1168006.mozfiles.com/files/1168006/pin_genie_locker-_screen_lock_applock_apk_download.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4424036/normal_5f9fc79969125.pdfIn PDF document text
    • https://site-1175385.mozfiles.com/files/1175385/ohio_copperheads_baseball.pdfIn PDF document text
    • https://site-1168030.mozfiles.com/files/1168030/rupelukelejos.pdfIn PDF document text
    • https://cdn.sqhk.co/lolajelor/4hjgh6D/58855636256.pdfIn PDF document text
    • https://cdn.sqhk.co/vovewotutal/oihidjf/pwc_cyber_security_newsletter.pdfIn PDF document text
    • https://site-1174888.mozfiles.com/files/1174888/real_car_parking_multiplayer_mod_apk_2__91.pdfIn PDF document text
    • https://site-1168045.mozfiles.com/files/1168045/whatsapp_messenger_download_free.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/posufij/shopping_list_template.pdfIn PDF document text
    • https://s3.amazonaws.com/nisiwanolom/11_bipartite_settlement.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files2/brute_force_password_online.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_off0000e04f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE04F 5796 bytes
SHA-256: f2ad38b125b08d39e3004bf2cb9be242e5aca24feb91710b4965307ac9878027
font_01_sfnt_off0000f415.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF415 10716 bytes
SHA-256: 6c18d3fa04b89cb3527d1fe0a1187d3427184b3b3d08858344eac0eb579c4ebc

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