Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ff2b4542fe597c3…

MALICIOUS

PDF

77.2 KB Created: 2021-06-11 10:24:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: cadeaf9d8079497087f0a25616c5a1f4 SHA-1: aaa2280cd2900d50ac8458f4ff89c492fd248471 SHA-256: 3ff2b4542fe597c3df12a6b642957171f9bf14c4c13ca66cc3a9284fe4479d10
134 Risk Score

Malware Insights

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

This PDF document was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier, indicating malicious intent. The document contains numerous links, many pointing to disposable hosting, and one prominent URL related to 'canada eta visa for pakistani' suggests a phishing or scam lure. The presence of external URIs and the link farm behavior indicate an attempt to redirect users to potentially malicious websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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 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.
  • 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://smidgel.ru/pbw?utm_term=canada+eta+visa+for+pakistani PDF link annotation
    • https://totidulabi.weebly.com/uploads/1/3/1/6/131606487/8506336.pdfIn PDF document text
    • https://pulatufulufu.weebly.com/uploads/1/3/4/6/134610330/8646530.pdfIn PDF document text
    • https://kidamevu.weebly.com/uploads/1/3/1/4/131437276/1a22950.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365659/normal_60348cdfaecc7.pdfIn PDF document text
    • https://lotekovikerux.weebly.com/uploads/1/3/1/3/131398560/6832902.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4466172/normal_5fd270a95e161.pdfIn PDF document text
    • https://gekubunog.weebly.com/uploads/1/3/4/2/134235395/tofuranujenap.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gonumutat.pbworks.com/w/file/fetch/144725754/tzumi_probuds_true_wireless_earbuds_instructions.pdfIn PDF document text
    • http://gulisapil.pbworks.com/f/18680068676.pdfIn PDF document text
    • http://zufiwuz.pbworks.com/f/pemalul.pdfIn PDF document text
    • http://vikowezanipe.pbworks.com/w/file/fetch/144871632/why_are_my_headphones_quiet_on_one_side.pdfIn PDF document text
    • http://nadupodifado.pbworks.com/w/file/fetch/144469869/easycap_usb_video_capture_driver_windows_10.pdfIn PDF document text
    • http://ronefete.pbworks.com/f/world_basketball_championship_flonga_unblocked.pdfIn PDF document text
    • http://wiwedano.pbworks.com/w/file/fetch/144421182/rubem_fonseca_feliz_ao_nuevo.pdfIn PDF document text
    • http://kokoxudalux.pbworks.com/w/file/fetch/144426924/biofloc_fish_farming_training_manual.pdfIn PDF document text
    • http://povelin.pbworks.com/f/monobotil.pdfIn PDF document text
    • http://fokopaviwu.pbworks.com/f/miwirapebigunozupif.pdfIn PDF document text
    • http://zixememot.pbworks.com/f/tojinuxiwet.pdfIn PDF document text
    • http://devopiporo.pbworks.com/w/file/fetch/145124799/mogudizuxu.pdfIn PDF document text
    • http://zabodovojif.pbworks.com/f/24187088647.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0c51dbf5-195d-4165-ba77-6a0fc219602c/convert_xmp_to_lrtemplate_online_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fde29e08-2a2c-4cd3-93e4-90d994cd2504/chandamama_stories_in_telugu_free_download.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f0bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0BC 5032 bytes
SHA-256: 59d7686b869e9e25e9c704434fe0274d92d71fc0945d87b58bef941034994c3f
font_01_sfnt_off000101f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x101F3 11080 bytes
SHA-256: cf8a63143afcd050f23e25f95d85aa7cc3bdcb7413da07c636080fe29d8224b5

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