Malicious PDF — malware analysis report

Static analysis result for SHA-256 96b60419dfba596a…

MALICIOUS

PDF

77.1 KB Created: 2021-03-19 04:05:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: 0c6bc7705c0ea09cb2e26612cee0458c SHA-1: b0f11f565a67611ba2a44017f6b340eb2db9d4fc SHA-256: 96b60419dfba596a7ecedce68c944acafd8314c520fc513cfe304294ae5294aa
186 Risk Score

Malware Insights

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

The PDF contains a significant number of external links, many hosted on disposable domains, indicating a link farm designed to direct users to potentially malicious content. The ClamAV detection and ML classifier strongly suggest malicious intent, likely related to phishing or malware delivery. While no scripts were directly extracted, the PDF structure and embedded URLs point towards an attempt to exploit user interaction with these links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://xezojetit.ru/strik?utm_term=do+damon+and+elena+get+together+in+the+books PDF link annotation
    • https://xojutezakiveze.weebly.com/uploads/1/3/5/3/135318362/razetowabegowus.pdfIn PDF document text
    • https://sidatotivokusud.weebly.com/uploads/1/3/5/9/135959985/4d772f5e54.pdfIn PDF document text
    • http://solusaxisabo.scienceontheweb.net/grooving_operation_on_lathe_machine.pdfIn PDF document text
    • https://marezupudi.weebly.com/uploads/1/3/0/8/130874377/f1812d4334.pdfIn PDF document text
    • https://muxixeronazuxup.weebly.com/uploads/1/3/4/5/134508557/4e7959a39.pdfIn PDF document text
    • https://pijatopug.weebly.com/uploads/1/3/5/3/135303623/9194acfa75e1b6a.pdfIn PDF document text
    • https://jirakeleda.weebly.com/uploads/1/3/5/9/135992973/puxoniro.pdfIn PDF document text
    • http://wivuperafuzo.mypressonline.com/why_will_my_xbox_360_not_connect_to_xbox_live.pdfIn PDF document text
    • https://jaweditulopo.weebly.com/uploads/1/3/4/3/134313576/1100841.pdfIn PDF document text
    • http://woziwowariv.sportsontheweb.net/55398335624.pdfIn PDF document text
    • http://fuzubijixulux.mygamesonline.org/jixesuxufebatulowizafiven.pdfIn PDF document text
    • http://sokegex.mywebcommunity.org/79390678349.pdfIn PDF document text
    • https://daxelitifo.weebly.com/uploads/1/3/4/3/134368185/fiwide-bovelukidu-babunugulufodo-pelufakakusobo.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://ce55c564-0e79-48ac-bd91-a034cff8554b.filesusr.com/ugd/bd1fc0_8a0fcbf0c933470fa44d20bc40c16c91.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/bodajaku/nigupopusulipabuledodo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/92ab30db-4377-4123-91be-0e4f94e27e0a/bafetawazerugilivuzik.pdfIn PDF document text
    • https://f3dcd8e3-6656-4b47-a81e-a993d3c4f2a1.filesusr.com/ugd/aa9ef2_cd60060f1ca741ebb43d828a701a659c.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/e69da6da-8e59-4763-930a-8fc467d0502f/cazadores_de_sombras_temporada_2_captulo_10.pdfIn PDF document text
    • https://041f977c-1598-48cb-b578-3d63f550c8ab.filesusr.com/ugd/524ae3_2968bb645de040e6bf84ff44e3d1eb17.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/zafijukopa/elgato_game_capture_hd_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/viregujipowuru/cheat_sheet_rules_of_order.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3d07ff82-edb1-4577-8351-aa8c7b2fac96/dd_faerun_world_map.pdfIn PDF document text
    • https://s3.amazonaws.com/pasawe/medios_de_comunicacion_funciones_del_lenguaje.pdfIn PDF document text
    • https://s3.amazonaws.com/moduluzuxikari/japonumip.pdfIn PDF document text
    • https://9d76d0c6-5807-43ac-a2ba-7b4112d1a20a.filesusr.com/ugd/5cd33b_5d9d1d78437e43779828f3441711c6ae.pdf?index=trueIn 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_off0000f048.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF048 5444 bytes
SHA-256: f5e88ac76ef684f2980ae7659924114c4c579630f6672bf7e60bd30c77b333ff
font_01_sfnt_off00010299.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10299 10484 bytes
SHA-256: 9fd153b7a33d2f75d4f1461f32a34edd9fec18446063164cca87b78d6dd00521