Malicious PDF — malware analysis report

Static analysis result for SHA-256 b30562e6fe9704dd…

MALICIOUS

PDF

86.6 KB Created: 2021-03-20 03:28:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-10
MD5: 3b11e60bb179c58635b2a856d4c4c9f9 SHA-1: 359c9f86760e6fb369d5e841a563eafb3868601a SHA-256: b30562e6fe9704dd332457d38ade4a68c16863a0bf5c36d6b0fd007deba3d603
164 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many of which are SEO-optimized and point to PDF files, indicating a link farm or phishing attempt. The primary URL, https://botokaw.ru/wix?keyword=jungle+book+characters+movie, is presented as a search result, likely to trick users into clicking it. ClamAV and ML classifiers also flagged this PDF as malicious, supporting the phishing and potential malware distribution intent.

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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://botokaw.ru/wix?keyword=jungle+book+characters+movie PDF link annotation
    • http://siduwukalupi.22web.org/allok_psp_converter_free.pdfIn PDF document text
    • https://bipinudaw.weebly.com/uploads/1/3/4/7/134718108/f250a.pdfIn PDF document text
    • https://xaxafojub.weebly.com/uploads/1/3/0/7/130738676/3506101.pdfIn PDF document text
    • https://dulexarupiwaju.weebly.com/uploads/1/3/3/9/133986428/xogexogavumavu_muxikifadej_zajik_vuximal.pdfIn PDF document text
    • https://ruzizoradum.weebly.com/uploads/1/3/4/3/134317959/8605776.pdfIn PDF document text
    • http://soluzixod.66ghz.com/bapovujufipuvu.pdfIn PDF document text
    • https://zisidolig.weebly.com/uploads/1/3/1/3/131379992/xogugife_gigosuwuxodat_nikumisedixibi_vexezeloxiwos.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
    • http://zozujuzozupu.rf.gd/why_is_my_black_and_decker_battery_charger_blinking_red.pdfIn PDF document text
    • https://s3.amazonaws.com/ponivotigegepub/cognitive_behavioral_therapy_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/xoguwavosuje/report_car_accident_within_24_hours.pdfIn PDF document text
    • https://s3.amazonaws.com/bogijexu/fofotut.pdfIn PDF document text
    • https://436c154b-1c2d-4c60-9768-ed3a268ef5e1.filesusr.com/ugd/e8e253_51ac613ce6a94f14b24d299476e5f04e.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/mejigavukolu/3197840874.pdfIn PDF document text
    • http://bipipofagikoma.rf.gd/plantronics_bluetooth_pairing_instructions.pdfIn PDF document text
    • http://gigapexolazet.rf.gd/dream_interpretation_dog_bite_my_leg.pdfIn PDF document text
    • http://tufuripisaren.epizy.com/jezuliranatagemigukowaju.pdfIn PDF document text
    • http://labaxufosegu.epizy.com/topowokoxenufuxozagirelel.pdfIn PDF document text
    • http://bosulug.epizy.com/jitukenetalekomavit.pdfIn PDF document text
    • https://ee67c5b3-b4d3-4257-b425-af55881d3a68.filesusr.com/ugd/c60da7_fe9546b087c84799a0427daeca910d41.pdf?index=trueIn PDF document text
    • https://4590046d-f0a9-4171-b8a0-56ff8c1fe63c.filesusr.com/ugd/0bfb20_8d666e102c1f4d20bbed9e7c9dd1d877.pdf?index=trueIn PDF document text
    • http://vegigekud.epizy.com/22229912184.pdfIn PDF document text
    • https://d670dda7-df53-4ef1-8eda-d3256df28744.filesusr.com/ugd/dbbbec_16a638cf37bf41c48aaac34d0ae67043.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
    • 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_off0000f01b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF01B 5348 bytes
SHA-256: 89442a58d12cd4add999d63d0cdbde4717fb0fe8d5fcd4e324199161cb9f1efc
font_01_sfnt_off0001021f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1021F 11956 bytes
SHA-256: 44a29255af5b89b9afeaa2a9df6a5a861c867345bdc28b2ef7c53b88a9dbfa29
font_02_sfnt_off000129d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x129D4 16036 bytes
SHA-256: ffcc099cb313ee7442755751e66ee5b466d1c2ae3a5aa4db1c7e493352985176
font_03_sfnt_off00013e43.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13E43 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e