Malicious PDF — malware analysis report

Static analysis result for SHA-256 39a6a590dacc782d…

MALICIOUS

PDF

78.3 KB Created: 2021-03-22 15:11:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 6222804b3a499f1c6077c87e9ada4214 SHA-1: 9abfd57790be2d9c66f897ab871752779482ed05 SHA-256: 39a6a590dacc782dd1d2fd7388490eadc5879957069931c7bc2475bf3a3c549d
156 Risk Score

Malware Insights

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

The PDF contains numerous external links, many of which are generated in a link farm pattern, suggesting a phishing or SEO poisoning attempt. The presence of a link to 'seumenha.ru' with a keyword related to 'brainwashing' further supports this. Although no scripts were explicitly extracted, the heuristic 'PDF_SEO_LINK_FARM' indicates the document is designed to host a large number of external links, likely leading to malicious content or further phishing pages.

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
  • 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://seumenha.ru/award?keyword=brainwashing+the+science+of+thought+control+pdf PDF link annotation
    • http://tovelksa.website/teberifubakemojuwakumcc8rx.pdfIn PDF document text
    • http://idealica-itufficiale.website/21328561623mfzco.pdfIn PDF document text
    • https://toverumu.weebly.com/uploads/1/3/0/8/130815437/fijaxoxipili.pdfIn PDF document text
    • https://gejizataki.weebly.com/uploads/1/3/3/9/133997606/69d2e1d6e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476925/normal_603dc1b72e630.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4452862/normal_5ff14a6e52a9b.pdfIn PDF document text
    • http://balewezekowesab.iblogger.org/765189117.pdfIn PDF document text
    • http://potolkilife.ru/2022967592fauy5.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/daniwodug/kutinimezinufenuk.pdfIn PDF document text
    • https://a82c121c-2200-4cd7-aff6-47cf910fdadb.filesusr.com/ugd/117c17_4609689871b744bc89210184ae04ac14.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/mexijegedakol/neck_exercises_using_resistance_bands.pdfIn PDF document text
    • https://s3.amazonaws.com/jobavo/skyscan_clock_28600.pdfIn PDF document text
    • https://f2d828cf-06d9-46ea-85af-d88b0bc20d44.filesusr.com/ugd/501a20_d27f9eece346485d97c971517f32ca21.pdf?index=trueIn PDF document text
    • https://8f1ef4f7-3f23-41ef-a3d6-4e5873a175a2.filesusr.com/ugd/d318ce_f5e9939052cd4bea842bc8d1d8fa1726.pdf?index=trueIn PDF document text
    • http://zovulebipa.epizy.com/lixirodaxixezutuvo.pdfIn PDF document text
    • http://jebafokar.rf.gd/did_ariel_die_in_little_mermaid_2.pdfIn PDF document text
    • https://s3.amazonaws.com/bibejovixapis/60507127468.pdfIn PDF document text
    • https://s3.amazonaws.com/wewuxuviwar/wupakitavokiwaxomexe.pdfIn PDF document text
    • http://sebilazog.rf.gd/7686830833.pdfIn PDF document text
    • http://mejesikiwabez.epizy.com/wuvupomowiwisinu.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e73e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE73E 5440 bytes
SHA-256: 6f6730465b73dea966b33f0c36f658fcd1cf4c930cf4bb27e1cb0a6f1866f7e5
font_01_sfnt_off0000f9c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF9C1 10408 bytes
SHA-256: ef0ae76f146877b2768849fa2e501fa5973cb3777c1445bbe8c11b196d45354a
font_02_sfnt_off00011d6f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11D6F 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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