Malicious PDF — malware analysis report

Static analysis result for SHA-256 65ce3e988c23e6bb…

MALICIOUS

PDF

77.2 KB Created: 2021-03-27 17:20:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 162c136037602037475c95fc0384af1e SHA-1: 2f4a9ab36425efb1d3021e8bce1f459ebec78028 SHA-256: 65ce3e988c23e6bb515094bda4d46f6110f3fcf1be1bdca0d7beb297d7bcad95
186 Risk Score

Malware Insights

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

The PDF file contains numerous external links, many pointing to disposable domains and potentially malicious content, as indicated by the PDF_SEO_LINK_FARM and PDF_SEO_DISPOSABLE_LINK_FARM heuristics. The ML classifier and ClamAV detection strongly suggest malicious intent, specifically identified as a phishing trojan. The embedded URL and the document body, which appears to be a garbled search query, support the attack pattern of luring users to malicious sites.

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://lozipotod.ru/strik?utm_term=cuanto+es+160+gramos+de+azucar+blanca+en+tazas PDF link annotation
    • http://tikovg.xyz/the_lord_of_the_rings_the_return_of_the_kingml6c3.pdfIn PDF document text
    • https://bupotovivo.weebly.com/uploads/1/3/3/9/133986694/5761892.pdfIn PDF document text
    • https://jikevisanudopud.weebly.com/uploads/1/3/4/0/134017539/a851ba5ba8be6.pdfIn PDF document text
    • http://nogurufegu.mygamesonline.org/54245861086.pdfIn PDF document text
    • http://fukijuwevo.getenjoyment.net/tc_electronic_d_two.pdfIn PDF document text
    • http://gisomog.iblogger.org/fofazu.pdfIn PDF document text
    • https://xajasirofoxuki.weebly.com/uploads/1/3/5/3/135330212/8cdc90447a62.pdfIn PDF document text
    • https://gerulelib.weebly.com/uploads/1/3/0/9/130969354/b18bf64841948c9.pdfIn PDF document text
    • https://pigamudabuv.weebly.com/uploads/1/3/4/2/134235231/1c52742846.pdfIn PDF document text
    • http://vowewudimo.mypressonline.com/how_does_curse_of_strahd_end.pdfIn PDF document text
    • http://damvglaz1.xyz/ejercicios_nomenclatura_iupac_quimica_organicathq7b.pdfIn PDF document text
    • http://nonretloli.site/how_to_use_corningware_browning_dishp6ihv.pdfIn PDF document text
    • http://hookup671.site/what_is_the_rarest_eye_color_for_blondes5f3zf.pdfIn PDF document text
    • http://lnstagramlivesupportcenter.com/cuales_son_los_sintomas_de_problemas_cervicalespjhbo.pdfIn PDF document text
    • http://delinapod.mypressonline.com/benguet_history.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xegubidutanaza.epizy.com/joint_stock_company_definition.pdfIn PDF document text
    • https://5c71d6b4-13b5-43a2-97a4-9a0eba4d0f4d.filesusr.com/ugd/0f1814_8488f89a9f454a8bb53bf948588cdf5d.pdf?index=trueIn PDF document text
    • http://jisunopesaluzi.atwebpages.com/cognitive_behavioral_therapy_techniques_for_retraining_your_brain_-_jason_m._satterfield.pdfIn PDF document text
    • https://bc732cde-fb09-4fee-8ab5-c82a45a1131b.filesusr.com/ugd/2ac701_39f7a781db74495e8c604e0d1f3dee10.pdf?index=trueIn PDF document text
    • https://0d3c4653-ec4b-4b04-9c20-59e348ba858e.filesusr.com/ugd/62200f_f71679024cf044d59ce18ce4881c9224.pdf?index=trueIn PDF document text
    • https://656adf98-7a81-40bd-8d0f-2b9c27d09201.filesusr.com/ugd/268ab1_e0b2d1d685664a918dd6dbdf9e978c7d.pdf?index=trueIn PDF document text
    • https://d2faa26e-66ca-44cd-8f84-883624a71019.filesusr.com/ugd/dbbfd0_2277483d76ea4a0caa922d65b231515b.pdf?index=trueIn PDF document text
    • http://limopapelekoke.rf.gd/roland_tr-8s_sale.pdfIn PDF document text
    • https://7afcd0b8-98df-42a4-afe0-9544d44c9539.filesusr.com/ugd/74e9cf_4233eab87f664011bd71697740089743.pdf?index=trueIn PDF document text
    • http://sejonigimanam.epizy.com/metulimomedujoteferuje.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_off0000eb1b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB1B 5704 bytes
SHA-256: 24acc15a7bb20ec7de767fad8124186df35bd3e97bd95ac47fb4c4ce48382c42
font_01_sfnt_off0000fe6b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE6B 12604 bytes
SHA-256: 299cf066a55de39cf6706ba2417d2270d23999639d8bfc394cced94524fa4ba4

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