Malicious PDF — malware analysis report

Static analysis result for SHA-256 2cbabb79c3d56624…

MALICIOUS

PDF

75.6 KB Created: 2021-03-14 00:10:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-20
MD5: 00f7447ae305021061b9f32a32a41249 SHA-1: ec3914600fa36fdff7b394f1ada4dbd619cca174 SHA-256: 2cbabb79c3d566242fb34effe0fad8f862c98a423d14d5e3edb09e074f47c3a1
184 Risk Score

Malware Insights

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

The PDF contains embedded URLs that point to known malicious redirectors and disposable hosting, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. Although no scripts were extracted, the presence of malicious links and the document's structure suggest it's designed to trick users into navigating to harmful sites.

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/123?utm_term=barbie+doll+game+free In PDF document text
    • http://texulateniz.iblogger.org/71634093888.pdfIn PDF document text
    • https://cdn.sqhk.co/numokafas/2ZrvSgl/19965671752.pdfIn PDF document text
    • http://igrarazuma.info/nipaxebajikujq2kp.pdfIn PDF document text
    • http://mgacessoria.online/714556940239scmm.pdfIn PDF document text
    • http://womenita.fun/sap_mm_module_online_tutorialrkycn.pdfIn PDF document text
    • http://xekuluw.iblogger.org/vogawupozobexewi.pdfIn PDF document text
    • https://cdn.sqhk.co/dutaxato/gfhjhhi/pikmi_pops_fruit_fiesta.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://vozotol.rf.gd/how_to_remove_sim_card_from_lg_v30.pdfIn PDF document text
    • https://bed2d873-735b-46bb-a8a3-264d0455df4e.filesusr.com/ugd/03ede2_2f48254b583b49939519cb0f6ca17ab3.pdf?index=trueIn PDF document text
    • http://lopaxoreje.rf.gd/how_do_you_beat_a_1-3-1_zone_defense.pdfIn PDF document text
    • http://wapugabidojako.rf.gd/teledyne_laars_boilers_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/52ea2074-bd91-4b42-85c0-b976463b9e7a/silence_becca_fitzpatrick_movie.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/602f4971-56fd-41bb-b4cb-a7954fad7bc1/jikilowex.pdfIn PDF document text
    • https://ac734925-007a-49fa-9a6b-2340142042ec.filesusr.com/ugd/ea78e0_589579190965486b9bbeaf57085d0756.pdf?index=trueIn PDF document text
    • https://4d75d3c9-3a4d-4df6-84ab-e48b83d723e5.filesusr.com/ugd/cdb50c_0977fc79b0984d59bc68da4b7f8bcdd1.pdf?index=trueIn PDF document text
    • http://puvipul.epizy.com/goblin_sword_shadow_temple_level_8.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_off0000e86c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE86C 5240 bytes
SHA-256: 5359043514ec3b77e5622f4addcb5ba5d0abd9fb6780b5d113118e7bc365b80d
font_01_sfnt_off0000fa2d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA2D 11848 bytes
SHA-256: cacdd01d471352216a15186a8d6724296dded851bf0dc539d710bc60c5b24817

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