Malicious PDF — malware analysis report

Static analysis result for SHA-256 df59e802caba3de7…

MALICIOUS

PDF

79.9 KB Created: 2021-03-18 11:44:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 2d5cb6326469ad53d3aed03c6a215a6a SHA-1: b22b83ae5e71b464cc31dff631d1dd9ba9af7edf SHA-256: df59e802caba3de7980bab16b1b704f35ee1e7b7343ee24e7b83f8258c0ed472
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

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 0.9996

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 is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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/aws?utm_term=summer+baby+gate+installation+instructions PDF link annotation
    • https://cdn.sqhk.co/suxujaba/iaRgbgj/my_superhero_movie_song_lyrics.pdfIn PDF document text
    • https://jewutejaj.weebly.com/uploads/1/3/1/0/131070173/tumijuzawutob.pdfIn PDF document text
    • https://cdn.sqhk.co/vibebexez/thhxeZ4/37024221798.pdfIn PDF document text
    • https://cdn.sqhk.co/zururodi/sjbjbgf/fox_deportes_mexico.pdfIn PDF document text
    • https://dituwugo.weebly.com/uploads/1/3/4/2/134235792/mipomomi.pdfIn PDF document text
    • http://unityfree.xyz/jepurexisuxejoma525jj.pdfIn PDF document text
    • https://limuvowefegepud.weebly.com/uploads/1/3/4/5/134509231/2109805.pdfIn PDF document text
    • http://podcard2020.site/gidilosipogawevulekam3vfjj.pdfIn PDF document text
    • http://istlan.space/danielle_steel_best_books_quoragonq4.pdfIn PDF document text
    • http://datinge.site/hardboiled_eggs_ovenjeiuc.pdfIn PDF document text
    • http://topdouche.xyz/23391083091dsx14.pdfIn PDF document text
    • http://domensita.fun/3d_model_free_for_blenderlbwz6.pdfIn PDF document text
    • https://cdn.sqhk.co/soboxuxafiso/dj7iggh/34676814416.pdfIn PDF document text
    • http://pubggaming.online/dank_meme_soundboardfttzj.pdfIn PDF document text
    • http://zdorovie-vashe-vse.xyz/comptia_network_n10-_006_dumps7x0rv.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://e082b6be-64c0-45f6-a8ff-82b9c6f476f0.filesusr.com/ugd/1479de_2c202c29bf4349e2a17b1e9da79b7d06.pdf?index=trueIn PDF document text
    • http://galopaxuvubopuj.rf.gd/293194567.pdfIn PDF document text
    • http://rejeremonuwiz.rf.gd/vubakanogodujowusar.pdfIn PDF document text
    • https://f9fc249e-2e6a-4908-9eb0-88005465a50d.filesusr.com/ugd/2530ee_c0f3f242c43942eea1c11b816fc0d5d5.pdf?index=trueIn PDF document text
    • http://lapojuvide.epizy.com/92164450820.pdfIn PDF document text
    • https://4cd5eafb-d261-4666-a528-29b55b1676c1.filesusr.com/ugd/8dde66_1b12fe6946bd4a5caa75008c78ed58e3.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000edd8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDD8 3112 bytes
SHA-256: 7580ce97cbc3e37eafb103862391f8971d48576d361f1487b434a5904d0675d6
font_01_sfnt_off0000f8fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8FB 5464 bytes
SHA-256: 510bfdd21fc22009e740788e8059c1ad4f8d18576fab7960f67955d0c42ba9a0
font_02_sfnt_off00010b80.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B80 10600 bytes
SHA-256: e90ececeaaca0460e9cbb33ac9ce6537ff65d500a3294d1a368d546478fc0c56

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