Malicious PDF — malware analysis report

Static analysis result for SHA-256 9b67a72bb27c276a…

MALICIOUS

PDF

123.7 KB Created: 2020-12-25 00:42:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 0e4be2b7aaa3b1c7c43052c845a4df99 SHA-1: bd9d4e49f52f36bbd5d235fa86480ff50c92bf77 SHA-256: 9b67a72bb27c276aa9ff1dd6540e0a4f00f4611aea60358906f16f478fc7baad
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains an embedded URI pointing to a suspicious domain, likely intended to trick the user into visiting a phishing or malware distribution site. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as a phishing trojan. No scripts were extracted, but the presence of an external URI is a primary indicator of malicious activity.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9891

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://traffine.ru/123?utm_term=minty+pickaxe+code+gamestop PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4449184/normal_5fd9c7d9aa1d4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375357/normal_5f9c700a2791e.pdfIn PDF document text
    • https://cdn.sqhk.co/pufojoloz/COZaLjf/wazemurumupuwebires.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4374360/normal_5fdf80c80a2fb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451753/normal_5fbb122552f50.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4386593/normal_5fe4083d2296a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4401714/normal_5f9af6e6664c7.pdfIn PDF document text
    • https://cdn.sqhk.co/resasenubori/cheBohe/samoveg.pdfIn PDF document text
    • https://cdn.sqhk.co/pitadewedobu/STdoWa1/umc-_west_pharmacy_el_paso_tx_79912.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://uploads.strikinglycdn.com/files/8d5ce70c-4995-4743-b2df-8cab0a4914c8/xurekazu.pdfIn PDF document text
    • https://s3.amazonaws.com/xubifupi/integrated_math_3_volume_2_answer_key.pdfIn PDF document text
    • https://s3.amazonaws.com/titugome/audio_format_ac3.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/52ce2e6a-5103-4105-a290-ef9d0315a2c4/39026208134.pdfIn PDF document text
    • https://s3.amazonaws.com/salosibejodod/crunchyroll_bad_gateway.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
    • https://savannah.gnu.org/projects/freefont/In PDF document text
    • http://www.gnu.org/licenses/In PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlIn 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 7

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00014387.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14387 6440 bytes
SHA-256: 629123bfde0685c5f69bbdd27ec008bde0224d5c30af1dabb990f6ee33ea778e
font_01_sfnt_off0001534a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1534A 5412 bytes
SHA-256: b7fe716e74afb58886a52bf6bce5a5fe6125ca3b622c4f8793235bcc0a0f9616
font_02_sfnt_off00016612.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16612 5292 bytes
SHA-256: fbd2be77ec5492f19518c84f7fc92a94ef529af19f68599430fb8849c4864de6
font_03_sfnt_off0001780a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1780A 3204 bytes
SHA-256: c557f35435cb89f9cf36fd1a3591426f223800f63b6412ed30db08b10a2f736c
font_04_sfnt_off00018544.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18544 17180 bytes
SHA-256: 9deff53fd5af82bdf2a38e260f92b2fa3da98deacd8f666b2863632962177f15
font_05_sfnt_off0001b903.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1B903 17252 bytes
SHA-256: 9047be69f94d7cc564ec242b00685b2abeb46b6382282af39ef2e7cd61176313
font_06_sfnt_off0001d1b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1D1B0 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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