Malicious PDF — malware analysis report

Static analysis result for SHA-256 c94c7c4b9fd7eb51…

MALICIOUS

PDF

85.0 KB Created: 2021-04-06 04:09:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 331937c9930e0a6bfcdce84b5a8fa832 SHA-1: 3374f160317f9dda812a84d0a51d6b61e422f989 SHA-256: c94c7c4b9fd7eb51b44a5e5e3587ecf01c36d5fd8f9e1ae98964a15985055582
156 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • 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=how+to+read+a+stock+market+report PDF link annotation
    • http://magonawaneku.22web.org/resumen_libro_barcos_que_vuelan_gratis.pdfIn PDF document text
    • https://webimilosajepi.weebly.com/uploads/1/3/4/8/134859137/vubokalavesexo.pdfIn PDF document text
    • https://sesuxaned.weebly.com/uploads/1/3/5/3/135349378/6327436.pdfIn PDF document text
    • https://morexenuf.weebly.com/uploads/1/3/5/3/135311883/galime.pdfIn PDF document text
    • https://kefuvarunif.weebly.com/uploads/1/3/0/7/130739830/wakakumumelifadona.pdfIn PDF document text
    • https://sedapelagug.weebly.com/uploads/1/3/4/1/134109100/kagevodimexupus.pdfIn PDF document text
    • https://toxejezewigi.weebly.com/uploads/1/3/4/5/134513259/mosozizapa.pdfIn PDF document text
    • https://putebofodabisig.weebly.com/uploads/1/3/4/3/134368176/tovupufoxis_xuxasi_senatewe_rejezori.pdfIn PDF document text
    • https://lolinukopo.weebly.com/uploads/1/3/4/3/134351434/8644203.pdfIn PDF document text
    • https://nabokopawupanav.weebly.com/uploads/1/3/0/7/130739772/2072901.pdfIn PDF document text
    • https://lopatitegadusi.weebly.com/uploads/1/3/5/3/135311006/5850090ed5b13d.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/dalava/pennsylvania_voluntary_acknowledgment_of_paternity_form.pdfIn PDF document text
    • http://safamulidapi.epizy.com/31507673699.pdfIn PDF document text
    • https://s3.amazonaws.com/zarusegibitumet/camisas_para_damas_uniformes.pdfIn PDF document text
    • https://s3.amazonaws.com/votawawo/rovovolewodob.pdfIn PDF document text
    • https://6b9ff03a-ef48-417a-a14c-919df0f903d0.filesusr.com/ugd/f459ea_9a9ab46500d2402092283af23e4b6507.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/biwubeleba/veobecn_a_anorganick_chmia_mogrovi.pdfIn PDF document text
    • https://9e77dbea-16d6-438e-9859-4a68c5388828.filesusr.com/ugd/3225da_4cc3dd4e4e6e491f9148b24ad6043c3f.pdf?index=trueIn PDF document text
    • https://dd3a609d-fcd9-461e-ae06-f7e9ec6f332d.filesusr.com/ugd/811c3f_79f378c668094caaab0e3b4b1d5ccc6b.pdf?index=trueIn PDF document text
    • https://cf21b241-1edd-4e7a-8b85-4b7fa12bec5a.filesusr.com/ugd/835652_62b84aac29994bea8dc69309cf152ae9.pdf?index=trueIn PDF document text
    • http://gemugefamizavi.rf.gd/why_is_my_scanner_not_working_java.pdfIn PDF document text
    • https://s3.amazonaws.com/gozifep/statistics_t_distribution_table.pdfIn PDF document text
    • http://tuzererelutido.epizy.com/4577710008.pdfIn PDF document text
    • https://6e8b94c7-278c-4a65-9c30-8d61c93a8f31.filesusr.com/ugd/9ff9b8_ce7dd21c2dd64ad5b3e20366cee8e80b.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010bb1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10BB1 5304 bytes
SHA-256: 9347acd106331f33141c1ce4641e0ea83de99d8f2559cdb392baf8d46102d817
font_01_sfnt_off00011dbb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11DBB 12288 bytes
SHA-256: 935f0ef331df69b75c5137ca9d5ac459e99784b0fed8deb134c57a838aa3c429

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