Malicious PDF — malware analysis report

Static analysis result for SHA-256 e3bffe6b83e2ce07…

MALICIOUS

PDF

88.2 KB Created: 2021-03-25 10:06:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-04
MD5: 9c869f63b641077fa6e813df3b291500 SHA-1: 835a78c83e9e04f08db083fad3b06090db8270b8 SHA-256: e3bffe6b83e2ce0795cf0198df2263d64034ac185ffd8071be7ad4fbd0eff5b1
184 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics, including a critical alert for linking to known malicious redirector infrastructure. The embedded links, such as 'https://dafemum.ru/award?keyword=can+you+ever+forgive+me+lee+israel+pdf', are designed to lead users to potentially harmful websites. The document body is heavily obfuscated, but the presence of numerous links and the critical heuristic firings strongly indicate a phishing or redirection attempt.

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://dafemum.ru/award?keyword=can+you+ever+forgive+me+lee+israel+pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4386361/normal_5fd31fbe2df84.pdfIn PDF document text
    • https://kaferafodi.weebly.com/uploads/1/3/0/7/130775544/kedevasujazotodomi.pdfIn PDF document text
    • https://rogubofiduga.weebly.com/uploads/1/3/1/0/131069879/3276575.pdfIn PDF document text
    • https://pujeradix.weebly.com/uploads/1/3/2/6/132695809/difosun.pdfIn PDF document text
    • http://mimasajikataza.iblogger.org/wovud.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4406229/normal_5fede9e42c5fb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369638/normal_5fd0f6bba89d7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459640/normal_6013c4b4092f9.pdfIn PDF document text
    • http://lenorimageb.iblogger.org/iron_carbide_phase_diagram_explanation.pdfIn PDF document text
    • https://wijizavop.weebly.com/uploads/1/3/4/3/134309393/wanokuwum.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://revuzulikasulo.epizy.com/frigidaire_dehumidifier_ffad7033r1a0_manual.pdfIn PDF document text
    • http://rapuzezu.epizy.com/peterbilt_389_radio_wiring_diagram.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/efe303ba-868a-4407-aea8-a275a4e40832/45267985347.pdfIn PDF document text
    • http://ninukak.epizy.com/72794326269.pdfIn PDF document text
    • http://fiviwuzovalexop.rf.gd/sadakapemawetevafogixuso.pdfIn PDF document text
    • http://vibuzegemasi.epizy.com/palmistry_money_line.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/34e322de-f089-4b1c-8086-57eb54aa19ac/26266493048.pdfIn PDF document text
    • http://bobupugarini.epizy.com/41894121503.pdfIn PDF document text
    • http://jupofoxina.rf.gd/zadewesawewigukugen.pdfIn PDF document text
    • http://wepojokogujurak.epizy.com/how_many_carbs_are_in_a_mini_frosty.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_off00011940.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11940 5428 bytes
SHA-256: 85cc8b93e886f461331bb0cc73cf67a6403941a612778a6591a584d0d13a8c64
font_01_sfnt_off00012bb3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12BB3 11668 bytes
SHA-256: 30f957e436f9bae6dda4b2eb66490724f613ba0ee1740904c4f7002591a1fd70

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