Malicious PDF — malware analysis report

Static analysis result for SHA-256 700abe71fd5dcc69…

MALICIOUS

PDF

83.9 KB Created: 2021-03-14 20:25:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: c77d0e1276e8af2fc643f797beb33b3b SHA-1: 6579b094fdb7e32f938285328121a05c00b5bbbe SHA-256: 700abe71fd5dcc69c9be1533f65819fa037575c3efdd77f29faf704a1ab60fc4
186 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 6

  • 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.
  • 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://jacksth.ru/wix?keyword=ge+sensor+convection+microwave+oven+manual PDF link annotation
    • http://dapajurop.mygamesonline.org/shark_ion_robot_r87_reviews.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386092/normal_6048a66ff1f45.pdfIn PDF document text
    • https://suviliter.weebly.com/uploads/1/3/1/4/131453542/7918bb20b8.pdfIn PDF document text
    • https://cdn.sqhk.co/zidezofa/zZjhx81/1621383908.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4405440/normal_5fdf43fa11bfa.pdfIn PDF document text
    • https://memefuzagimo.weebly.com/uploads/1/3/4/6/134612336/milikenoxupipu_ragukewad_goganavog_larupujenozos.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403683/normal_6001f5ef66c62.pdfIn PDF document text
    • http://pupezawat.scienceontheweb.net/volume_of_a_cylinder_worksheet_grade_8_answer_key.pdfIn PDF document text
    • https://cdn.sqhk.co/lepowabog/isifJic/18803761121.pdfIn PDF document text
    • https://cdn.sqhk.co/finepawug/giejehh/pemamusejoxos.pdfIn PDF document text
    • https://cdn.sqhk.co/tazifawixax/giojghg/thief_gold_lost_city_map.pdfIn PDF document text
    • https://cdn.sqhk.co/zesonixiv/fRPQ6jf/pc_tractor_games_free_download_for_android.pdfIn PDF document text
    • https://cdn.sqhk.co/tajixixejafi/gN8hihA/kosodulopibapu.pdfIn PDF document text
    • https://zinegekoxemajaj.weebly.com/uploads/1/3/4/7/134767253/xobarudizuwo_faguvunes.pdfIn PDF document text
    • https://zifofuxe.weebly.com/uploads/1/3/5/3/135386801/bofisosas.pdfIn PDF document text
    • https://cdn.sqhk.co/woleparos/ghjiKie/vivotu.pdfIn PDF document text
    • https://cdn.sqhk.co/bajipugotox/X9ziaVY/56056876712.pdfIn PDF document text
    • https://cdn.sqhk.co/mapigusene/URzhi1K/79040930266.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://0f285ee0-1b14-49a2-8a3e-060a2db94812.filesusr.com/ugd/4bf67f_c40b7cbd90ec4941ba7f8a8276d4a67e.pdf?index=trueIn PDF document text
    • https://0d3c4653-ec4b-4b04-9c20-59e348ba858e.filesusr.com/ugd/62200f_bcf4f4475215402f978482e2d51a33bd.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_off0000f3d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3D3 5624 bytes
SHA-256: 94c9fdb5bfe55c499c9b170eab6258f9d4398b7f55723fd5607109fd02a07508
font_01_sfnt_off00010732.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10732 5128 bytes
SHA-256: d25d3a93271d9c5596ab7bca749eee64a8928dde8b2e837c469483807f88b1a2
font_02_sfnt_off0001189f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1189F 12172 bytes
SHA-256: 26aac939fbdc8e505a9204a8d542c141a8f49b309758d5b61fc5ec77342c5d73

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