Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e5acd7d8bcbf15a…

MALICIOUS

PDF

91.6 KB Created: 2021-03-28 19:12:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: 6e68a0586eda5af8a452ccb08af8c0ac SHA-1: c2a37d117a3215c14a7e756f27d07556547d77f9 SHA-256: 2e5acd7d8bcbf15a2567c69ce5e4581cbf039b84a9076854cd266ac2dcc7b43d
186 Risk Score

Malware Insights

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

This PDF file is identified as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains a large number of external links, many hosted on disposable domains, suggesting a link farm designed to redirect users to malicious content. The document body, though heavily obfuscated, contains keywords related to downloading software, likely a lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://jumiwimov.ru/award?keyword=adobe+acrobat+pro+dc+edit+pdf+free+download PDF link annotation
    • https://gefivogixofix.weebly.com/uploads/1/3/0/9/130969648/bunozumadatewiwizore.pdfIn PDF document text
    • https://javesuput.weebly.com/uploads/1/3/0/8/130873829/dulifalivukaxun_gigul_dokirizub_nileluwened.pdfIn PDF document text
    • https://xugubevowasisof.weebly.com/uploads/1/3/4/8/134885616/robaripatokifa.pdfIn PDF document text
    • https://roguvajodanuk.weebly.com/uploads/1/3/1/3/131379692/zinoluwelizax_fevotifisavufum_busuvelivegirun.pdfIn PDF document text
    • https://rawoxozuk.weebly.com/uploads/1/3/2/6/132695352/3524f5e43.pdfIn PDF document text
    • https://cdn.sqhk.co/kuvuwisarov/jLGiyjj/51589570349.pdfIn PDF document text
    • https://divaruwidis.weebly.com/uploads/1/3/4/0/134042650/dedarike.pdfIn PDF document text
    • https://cdn.sqhk.co/gepabafi/bsKB3QR/playstation_5_pre_sale_amazon.pdfIn PDF document text
    • https://nirulutot.weebly.com/uploads/1/3/4/7/134700174/ferapoboxokiki.pdfIn PDF document text
    • https://cdn.sqhk.co/varugefezum/T3iiHhq/26281307916.pdfIn PDF document text
    • https://cdn.sqhk.co/kitaparek/gihd3ha/brain_itch_meaning.pdfIn PDF document text
    • https://fumuzuwuwuwupu.weebly.com/uploads/1/3/0/9/130969925/zemavufojeximejewa.pdfIn PDF document text
    • https://pusuranan.weebly.com/uploads/1/3/4/5/134598414/gepubogobogegajasu.pdfIn PDF document text
    • https://sunivisoxeban.weebly.com/uploads/1/3/4/4/134493344/lekasezubejolebatiso.pdfIn PDF document text
    • https://gunobodupisar.weebly.com/uploads/1/3/4/6/134677737/jogogakab-vabajeke-nuvimipu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/0e8b5c99-fcd6-478b-bc60-826b51e91fe6/23979350971.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f5e3600d-ec8c-4544-92f8-a873ed337b57/pilot_light_on_gas_fireplace_went_out.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9ead0833-fab7-44f3-a2f5-48ab2b9fdd2a/vumopikanivuvetogulaled.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/55f1cf3a-ada2-4569-b1b7-b7c20e17f5ef/34356830543.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ab0de6f4-5131-4bed-baa8-ae3d28a545c9/nuxufoxopezositep.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7e0f82c5-d428-4199-868e-61397a0f4c1c/present_perfect_exercises_multiple_choice.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fc6d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC6D 5336 bytes
SHA-256: 2dbd5964d16024aad7c152620429d7863f46fc1b57760b94b937cd143fcc6791
font_01_sfnt_off00010f27.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10F27 5192 bytes
SHA-256: 7314dab62de3f2183a283d56f89c11116146a0d13b675208964d37c28963abb1
font_02_sfnt_off000120f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x120F3 11968 bytes
SHA-256: f6354125f1625a430572fd40fd7d1f38a961dc0a73dc22567a3ab8a4b993dca4
font_03_sfnt_off000147a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x147A5 16488 bytes
SHA-256: b88c55219ef84bd2ff48a12f23060c6b86d25efbafe4a8493ce51f9ac91249ff