Malicious PDF — malware analysis report

Static analysis result for SHA-256 6d80fc9ecec80ddf…

MALICIOUS

PDF

70.4 KB Created: 2020-11-25 09:19:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: fd65788ba92399de0456443da25e3f24 SHA-1: d5dce7457322e05aee7507e2c9648e7cedcd4eea SHA-256: 6d80fc9ecec80ddf6dabb8dbd87486ba6a23ef48bb34d6084eec2b16fdbfcb3b
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://traffking.ru/aws?utm_term=weather+report+in+qatar+today PDF link annotation
    • https://mefemanodi.weebly.com/uploads/1/3/1/4/131454269/8003050.pdfIn PDF document text
    • https://tupokigefadewun.weebly.com/uploads/1/3/4/7/134702618/c983fe5b406.pdfIn PDF document text
    • https://rirubonoji.weebly.com/uploads/1/3/4/5/134528367/9101410.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/81f45452-29ed-4018-ac79-ea2376818dcc/normas_iso_9001_para_dibujo_tecnico.pdfIn PDF document text
    • https://s3.amazonaws.com/dojonuta/xofiwubado.pdfIn PDF document text
    • https://s3.amazonaws.com/pezofut/tologuxexozigon.pdfIn PDF document text
    • https://s3.amazonaws.com/gewuwasi/springfield_literacy_center_springfield_pa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e09801ee-0473-44a1-bf3c-204c232f4840/41824234060.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5e2da009-79e1-498e-b84d-413ffd97265b/8830917308.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ffa86c09-3f97-4b90-b336-a68ccf51bd0d/sony_handycam_dcr_hc36_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a41a3c73-3bf8-46eb-9a60-406d715df9fb/23968884446.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/11d9a377-0889-4df8-907d-61df811ddd41/47187989975.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/45d7af72-8618-4fc5-9315-cf41102761dd/67316632588.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1fe57b51-aad5-42f8-8931-60c7bf26cbb1/73620531351.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_off0000c897.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC897 3556 bytes
SHA-256: 1cc5d0b8f58772e57f4f22575fb07a90dba619d8bc4272f26555e4cb5115bb55
font_01_sfnt_off0000d542.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD542 5076 bytes
SHA-256: 913eb8bfb35fbfee35f5555227696b2f8829f03249c758e899b00d63d020ad9e
font_02_sfnt_off0000e691.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE691 11524 bytes
SHA-256: c252acd9f27d28ddd363e6519785f40618ff4032f0519de797210db1ea1c3210

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