Malicious PDF — malware analysis report

Static analysis result for SHA-256 df5200e26b2f4ba0…

MALICIOUS

PDF

71.2 KB Created: 2021-01-14 17:59:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-02
MD5: 812efd46108e62fa9251f1697e542cd8 SHA-1: eb3e77529b849b2685d1f5df2eff04a17e0ff541 SHA-256: df5200e26b2f4ba05618c4d719c2db80024d08808bee0e230b0cb6874524c5d4
184 Risk Score

Malware Insights

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

This PDF document contains numerous embedded links, including one pointing to known malicious redirector infrastructure. The document body, though heavily obfuscated, appears to be a lure related to holiday images. The presence of multiple links on disposable hosting and the ML classifier's high confidence score indicate a phishing or malware distribution attempt. No scripts were extracted, but the embedded links are the primary indicators of malicious intent.

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://gettraff.ru/wb?keyword=happy%20mahashivratri%202020%20images%20download In PDF document text
    • https://tavifarexup.weebly.com/uploads/1/3/4/6/134611028/3866625.pdfIn PDF document text
    • https://site-1185109.mozfiles.com/files/1185109/wevadonenoza.pdfIn PDF document text
    • https://site-1175753.mozfiles.com/files/1175753/mojuvu.pdfIn PDF document text
    • https://site-1174796.mozfiles.com/files/1174796/eternal_card_game_review_2019.pdfIn PDF document text
    • https://site-1177663.mozfiles.com/files/1177663/19437350833.pdfIn PDF document text
    • https://tariwina.weebly.com/uploads/1/3/0/7/130739483/6022560.pdfIn PDF document text
    • https://site-1176402.mozfiles.com/files/1176402/santorini_miami_beach_restaurant.pdfIn PDF document text
    • https://site-1176426.mozfiles.com/files/1176426/86611031218.pdfIn PDF document text
    • https://site-1220925.mozfiles.com/files/1220925/formale_analyse_prometheus.pdfIn PDF document text
    • https://site-1168056.mozfiles.com/files/1168056/rock_talk_messenger_chat_download.pdfIn PDF document text
    • https://site-1208413.mozfiles.com/files/1208413/fadugaruseroxabu.pdfIn PDF document text
    • https://site-1171749.mozfiles.com/files/1171749/16_facts_about_medieval_castle_life.pdfIn PDF document text
    • https://site-1176821.mozfiles.com/files/1176821/roku_tv_no_sound_on_youtube.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/divelatoxa/ge_profile_advantium_120_microwave_reset.pdfIn PDF document text
    • https://s3.amazonaws.com/lonozote/jakorusamivegapazu.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cc3c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC3C 5864 bytes
SHA-256: 90fd775a96e9d14874cc625a4c62f18d7ce7f2d590f397365deb10162d0b4e86
font_01_sfnt_off0000e01e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE01E 1936 bytes
SHA-256: fc738c370df6154c8f52297237400898edafa04beec1ad15a0cd2a80172a8d51
font_02_sfnt_off0000e963.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE963 11104 bytes
SHA-256: 7f647d41c1c6cfff87c9f63356cc136c76d05a620858237042ba5aeb9c67473f

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