Malicious PDF — malware analysis report

Static analysis result for SHA-256 9ca59db4a668a3d8…

MALICIOUS

PDF

102.0 KB Created: 2021-06-13 00:19:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 38ec273e10f1b77135fa03e0380e186c SHA-1: df7b25834e5043c3d7a314cc5a1934c3784d0283 SHA-256: 9ca59db4a668a3d8ee9a5daf0a74b8dbbfffb138c61b88b82cb50a9c963a2cd1
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains numerous links, many pointing to disposable hosting, and one prominent URL that mimics a search result for a popular movie. This suggests a phishing or malware distribution attempt, leveraging a lure to drive traffic to malicious sites. While no scripts were explicitly extracted, the PDF structure and heuristic firings strongly indicate malicious intent, with ClamAV identifying it as a phishing trojan.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9959

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://inwebjor.ru/pbw?utm_term=kgf+tamil+full+movie+online+tamilrockers PDF link annotation
    • https://luxoxika.weebly.com/uploads/1/3/4/8/134899107/wurizuzafovefidiwefo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375522/normal_603ec06aea1d3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4389095/normal_5ff5365e2594d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4467038/normal_6042d6bfd2cc9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4376612/normal_5fcaf6cd6f083.pdfIn PDF document text
    • https://bejeselujolir.weebly.com/uploads/1/3/1/3/131379719/bonekovopofagewed.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4455370/normal_5ff68bf53b15d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369651/normal_5fe43a0232791.pdfIn PDF document text
    • https://sopogokatoluj.weebly.com/uploads/1/3/1/0/131071191/duguna_litisa_rapagurenum_wumivawepojisug.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389606/normal_5fd2a44148598.pdfIn PDF document text
    • https://tawudefategubo.weebly.com/uploads/1/3/5/9/135974656/kipapujo.pdfIn PDF document text
    • https://ladevizeloraben.weebly.com/uploads/1/3/1/6/131606454/9161434.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4501364/normal_60147ca352d97.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411001/normal_60168081aa10b.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
    • http://fedorahosted.org/lohitIn PDF document text
    • http://lekuzax.pbworks.com/f/xanexokudegedivisel.pdfIn PDF document text
    • http://zosajivapesi.pbworks.com/w/file/fetch/144549351/euro_truck_simulator_2_android_oyun_club_indir.pdfIn PDF document text
    • http://xuwajesorewo.pbworks.com/w/file/fetch/145126869/defects_of_vision_and_their_correction.pdfIn PDF document text
    • http://gatasulupu.pbworks.com/w/file/fetch/144422328/anamorphic_lens_flare_plugin_fcpx.pdfIn PDF document text
    • http://malamojozag.pbworks.com/f/harbor_freight_air_compressor.pdfIn PDF document text
    • http://bobiginokemo.pbworks.com/f/32902103786.pdfIn PDF document text
    • http://kevesefazoga.pbworks.com/f/what_does_it_mean_when_my_truck_says_service_stabilitrak.pdfIn PDF document text
    • http://mujefapufefi.pbworks.com/f/labojubekapibar.pdfIn PDF document text
    • http://javefanudosa.pbworks.com/f/12273822316.pdfIn PDF document text
    • http://vesenimu.pbworks.com/f/playmemories_camera_apps_apk.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 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001129b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1129B 3328 bytes
SHA-256: fd6bf2a9fbc4f2a49b6df8c775e97a5db465461d4c0b9e7c0cae3a3ab781197b
font_01_sfnt_off00011e8b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11E8B 5176 bytes
SHA-256: 5793718d39090c4fb002e947422c15a8803d717081fe42285289c61bda7af82e
font_02_sfnt_off0001301e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1301E 11376 bytes
SHA-256: 7b499ecb4962ca5d63fced4e476b4aff4186b519191dc800e3ccf8c3b5b270c2
font_03_sfnt_off00015700.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15700 16096 bytes
SHA-256: 292b67320f20e7e38814323bff47001ccb55b5eebb397aea8a254f3e91f57b87
font_04_sfnt_off00016bca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16BCA 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3
font_05_sfnt_off000179cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x179CB 4124 bytes
SHA-256: 9af0094ef517f70b822d0afd6f5bbb58bada89906580d52b0d5f5f3db6488d61

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