Malicious PDF — malware analysis report

Static analysis result for SHA-256 3febb94a01aab94c…

MALICIOUS

PDF

75.7 KB Created: 2021-06-03 14:18:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4a9f7e33eff0b70362b8292dc5fb5811 SHA-1: d361db76e03930b1c45d76d379f4fbba2e77b600 SHA-256: 3febb94a01aab94cb1366d967ad6fb31c3a44b7f3fa09f2ecf6736dac5d188ee
164 Risk Score

Malware Insights

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

The PDF contains a significant number of external links, forming a link farm, with the primary URL suggesting a lure for downloading 'little nightmares android mod apk'. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and heuristic firings point to a malicious document designed to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 6

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://synerhu.ru/pbw?utm_term=little+nightmares+android+mod+apk
    • https://tisefujuset.weebly.com/uploads/1/3/4/4/134488269/2faaab8cd7e0.pdf
    • https://vuganolo.weebly.com/uploads/1/3/5/3/135314000/90ae66c3.pdf
    • https://cdn-cms.f-static.net/uploads/4424672/normal_60622e5cb78b7.pdf
    • https://besozidemupi.weebly.com/uploads/1/3/4/6/134635439/lozexoj.pdf
    • https://boxotajisosuni.weebly.com/uploads/1/3/6/0/136086252/zakadejuwujig-lanavizumumevav-mifenudawuba-zopadetojikere.pdf
    • https://wavogovarixu.weebly.com/uploads/1/3/1/3/131379914/5272932.pdf
    • https://gokejaxax.weebly.com/uploads/1/3/6/0/136056436/nerijutexita.pdf
    • https://cdn-cms.f-static.net/uploads/4366014/normal_603f0b53847c8.pdf
    • https://bemafaparad.weebly.com/uploads/1/3/2/6/132681832/rowaxelawini.pdf
    • https://kibujedazem.weebly.com/uploads/1/3/5/3/135347543/488b795848d957.pdf
    • https://lisajakuxateril.weebly.com/uploads/1/3/4/3/134349263/8699174.pdf
    • https://cdn-cms.f-static.net/uploads/4477386/normal_602d49542b637.pdf
    • https://tedowinoni.weebly.com/uploads/1/3/5/3/135304389/7555557.pdf
    • https://lufuzanexitib.weebly.com/uploads/1/3/4/8/134859686/89feeda48137f.pdf
    • https://gitefitibed.weebly.com/uploads/1/3/5/9/135968717/kefir-tulem-bajarovunigiru.pdf
    • https://cdn-cms.f-static.net/uploads/4426543/normal_6029c84513140.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://pinurakus.pbworks.com/f/comunicao_e_expresso_unip_2020.pdf
    • https://uploads.strikinglycdn.com/files/548708b4-82b2-48a6-b03a-49402962198e/27450874532.pdf
    • http://lexibitite.pbworks.com/w/file/fetch/144532344/download_film_si_doel_the_movie_2_lk21.pdf
    • https://uploads.strikinglycdn.com/files/f37e8c29-de4b-4383-83a0-aeffe0600d29/6660539633.pdf
    • https://uploads.strikinglycdn.com/files/6f51f053-1af7-42dc-839b-2d11d85852aa/tamisete.pdf
    • http://mapijakemifo.pbworks.com/w/file/fetch/144431745/monodatuzefovelatot.pdf
    • https://uploads.strikinglycdn.com/files/3625a231-3bc9-4903-87c5-955f593d4ff4/la_leccin_de_august_resumen_rincn_del_vago.pdf
    • http://laxaxufudej.pbworks.com/f/macbeth_act_1_scene_6_summary_sparknotes.pdf
    • https://uploads.strikinglycdn.com/files/0e3aa731-7d51-41a3-9735-63c8c681b88e/votadisiko.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ea25.bin
d1177c7b058fde9af99787a7b85554f8472beb4fb48721da18cd0594e412adb8		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEA25 5380 bytes
font_01_sfnt_off0000fc3f.bin
932fa837c157b2417b2e118302b6315d10c0b09f32fc23ebefa8b263021e0d87		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFC3F 11032 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.