Malicious PDF — malware analysis report

Static analysis result for SHA-256 bf5f95d54c92e8f9…

MALICIOUS

PDF

74.2 KB Created: 2020-11-16 18:59:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: f7c0bdd63ba5e34e25c12d1dfeac09c2 SHA-1: 2a4b38d21910d60a39cc05f49b51bf673d8143a5 SHA-256: bf5f95d54c92e8f9bfa3af0bcbffa5d7478b501c8e96a0964c0a4974983d13da
104 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. It uses an urgency-based lure. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

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
  • 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://trafftec.ru/123?utm_term=buah+merah+mix+dosage PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4420761/normal_5fa0bfba94689.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426815/normal_5f9f2fbcc7a03.pdfIn PDF document text
    • https://sebiwijojemobod.weebly.com/uploads/1/3/4/0/134097571/sijanugarosoweziwez.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374521/normal_5f8ac0ed25ddf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387825/normal_5f99bfaff1e47.pdfIn PDF document text
    • https://lilawowawumoxo.weebly.com/uploads/1/3/1/4/131453384/369b724.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370989/normal_5f8902857dd78.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4477637/normal_5fa6627defa98.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367019/normal_5f8a1ac880d25.pdfIn PDF document text
    • https://xepajozojiv.weebly.com/uploads/1/3/4/4/134476610/siroz.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/5f9fa3a6-54da-481d-aedb-5eccd706e51d/82150080054.pdfIn PDF document text
    • https://s3.amazonaws.com/forupokisip/tamil_christian_songs_._com.pdfIn PDF document text
    • https://s3.amazonaws.com/paropabaru/keto_diet_food_list_printable.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bf64e590-47a7-4a0f-987f-db6e76a19a9e/36080325090.pdfIn PDF document text
    • https://s3.amazonaws.com/robumuduluwise/pixel_gun_apk_money.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cde0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCDE0 5324 bytes
SHA-256: 07cba0ee9b22af04d021707d54b90677c52830c5e0bced9b0c5d4bbd456542f8
font_01_sfnt_off0000dfd3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFD3 11360 bytes
SHA-256: aa889b9bb43f9d09a973322fd54606281aabd3ddb413f46a04a36d3a321b3f78
font_02_sfnt_off000106aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x106AA 16192 bytes
SHA-256: f685d83d15d6c36d1c1ce1d527888809e0051cefa96bf94e0cb9b1e1479be9c7

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