Malicious PDF — malware analysis report

Static analysis result for SHA-256 34c246d11b7362de…

MALICIOUS

PDF

90.4 KB Created: 2021-03-23 05:31:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: fffa7c0cacc4e5249cda4d82f36c2005 SHA-1: df5dc977c2ef32650d26a615f67d1e5da8f53ec3 SHA-256: 34c246d11b7362de148f6e55e749bdec3894926a72d118a6ada4776f5584e4c6
156 Risk Score
Tags
free-cdn-ebook-manual-lure

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 0.9997

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://dugedepap.ru/123?utm_term=carbohydrate+metabolism+chapter+pdf PDF link annotation
    • https://bokozimub.weebly.com/uploads/1/3/5/3/135326123/6333140.pdfIn PDF document text
    • https://lozexisivebuzon.weebly.com/uploads/1/3/4/7/134702594/e245027.pdfIn PDF document text
    • https://gadetuzajuvi.weebly.com/uploads/1/3/4/8/134850054/vilevilifa.pdfIn PDF document text
    • https://botugesoxa.weebly.com/uploads/1/3/4/5/134509905/tutipe.pdfIn PDF document text
    • https://lutigasudubuwa.weebly.com/uploads/1/3/2/6/132695203/1aa3e0ba348.pdfIn PDF document text
    • https://romizipomubem.weebly.com/uploads/1/3/0/7/130775952/mukuzikugijiro.pdfIn PDF document text
    • https://wimiwimevodozaz.weebly.com/uploads/1/3/0/8/130874111/gezab-wepefefumilet-pezadadov.pdfIn PDF document text
    • https://rebavunegiluzu.weebly.com/uploads/1/3/4/4/134497465/pejovububuxijewuwar.pdfIn PDF document text
    • https://piborubaladedos.weebly.com/uploads/1/3/4/7/134764427/3664845.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/wukevirenesu/fulinubusovitedefo.pdfIn PDF document text
    • https://f8340159-69ce-4309-ac43-521e9a8475b4.filesusr.com/ugd/bc0b97_209bb4494425417d91d661397d2c2387.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/besafefaf/perpetual_inventory_system_excel_template.pdfIn PDF document text
    • https://s3.amazonaws.com/rafiralexezol/yealink_sip-_t40g_datasheet.pdfIn PDF document text
    • https://94226b1b-8363-4ad6-a779-e61b7b16ff5b.filesusr.com/ugd/b3bc21_70ece33d2e6641df8d14bb438a8fdf9d.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/1d913e8f-7f6a-4f4e-9b6e-1381140af993/wekigabifupifunefurujava.pdfIn PDF document text
    • https://s3.amazonaws.com/forupokisip/turagafufaguj.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ba86add3-82f7-4d83-8a3f-906be6b861e5/sennheiser_wireless_g3_vs_g4.pdfIn PDF document text
    • https://s3.amazonaws.com/jemisajoda/vava_milk_frother_user_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/fonazuzixagizir/does_samsung_curve_have_disney_plus.pdfIn PDF document text
    • https://s3.amazonaws.com/nufidibodudulad/kepupu.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

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000116b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x116B1 5340 bytes
SHA-256: 8ab4568049ca4b8a5320fd03985c7a90f669cb58891896b2a56dcb2c767a7d74
font_01_sfnt_off000128e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x128E7 10940 bytes
SHA-256: 0faefa65a5dbe7544f7acb5033faf25e51dc40e1299bc5bb5a22371ef47b547c
font_02_sfnt_off00014e54.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14E54 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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