Malicious PDF — malware analysis report

Static analysis result for SHA-256 dd27bb3d76529d01…

MALICIOUS

PDF

75.9 KB Created: 2021-06-09 02:40:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 1214d0c350b20eed1a6d8972980f5150 SHA-1: e296c32e7a823f6960d2bb83557b8346ffb3ccea SHA-256: dd27bb3d76529d010b4e5c1ef0986abea434ae9b0d72f06d9e447eb6f7b8f409
186 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file was flagged as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains a large number of external links, many pointing to disposable domains, suggesting a link farm used for phishing or malware distribution. The document body, though heavily obfuscated, contains text related to movie watching, likely a lure to entice users to click on the embedded malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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://smidgel.ru/pbw?utm_term=shubh+mangal+zyada+saavdhan+movie+online+watching PDF link annotation
    • https://xovamiwif.weebly.com/uploads/1/3/4/0/134096018/3934b1a1ee46c2.pdfIn PDF document text
    • https://sowofodifidem.weebly.com/uploads/1/3/1/8/131856479/megumixojikutez.pdfIn PDF document text
    • https://lizoduloto.weebly.com/uploads/1/3/4/7/134701777/8847958.pdfIn PDF document text
    • https://xavidupi.weebly.com/uploads/1/3/4/7/134723560/6f140d6a4d.pdfIn PDF document text
    • https://jadanimotubow.weebly.com/uploads/1/3/1/8/131856100/nofolaxeke_venemikuzejut.pdfIn PDF document text
    • https://dawijenumekoxel.weebly.com/uploads/1/3/6/0/136087820/dirowesusozub.pdfIn PDF document text
    • https://bilafewutugu.weebly.com/uploads/1/3/4/6/134619215/8740548.pdfIn PDF document text
    • https://nulokoset.weebly.com/uploads/1/3/4/4/134447361/204299.pdfIn PDF document text
    • https://mewifebobonopad.weebly.com/uploads/1/3/4/6/134625165/sositedu_jarobuveb_rutiviwokado_barel.pdfIn PDF document text
    • https://xidoferowugefu.weebly.com/uploads/1/3/4/3/134348033/9932879.pdfIn PDF document text
    • https://geripipo.weebly.com/uploads/1/3/4/3/134371036/pugesi_mixowibetubam.pdfIn PDF document text
    • https://sadibagisu.weebly.com/uploads/1/3/4/7/134758630/lawawuwafuximuv.pdfIn PDF document text
    • https://pomonomiwubexi.weebly.com/uploads/1/3/2/3/132302815/dipikelo-nepumesuvojubi-rodafovudox-javumowalajo.pdfIn PDF document text
    • https://jikunuxot.weebly.com/uploads/1/3/4/3/134315974/tanotanor.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/a9bef185-099e-4f45-868d-c0166380e82e/fifa_2014_game_free_download_for_windows_7.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c78e46b6-1b00-4e33-aa4f-16bc7bf2d24e/xemusoseribam.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/47a6a43c-6453-4737-82e6-d0bfc258ede8/malibu_low_voltage_lighting_replacement_parts.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8fd99c66-c238-48e9-ab2d-e7da768e30dc/bukabuxonagetamij.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f626143f-3d93-46ff-9140-7393aa03de4b/unit_operations_of_chemical_engineering_7th_edition_ebook.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4b86a039-773a-44a8-a734-decf203775d9/church_security_sop_template.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1999b3d5-b441-4faa-9e09-e7b50cc3b4c5/six_way_paragraphs_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/49b87dba-5bf6-4fee-974e-a7292672e96a/kupaxufurebekaw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8fba65ab-8533-4680-9197-6939e6a36b17/como_convencer_algum_em_90_segundos_resumo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2b67c10b-3a03-4cdf-9a8b-87056df50e96/how_to_cheat_relationships_in_sims.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a495fb42-6d73-422e-9051-b91b2ea479eb/2004_dodge_ram_1500_brake_light_bulb_number.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_off0000e9da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9DA 5804 bytes
SHA-256: 4cc037b90f0f92523b0a3d223c027635208d02b6594574f7bfaf588b7a46844c
font_01_sfnt_off0000fd96.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD96 10708 bytes
SHA-256: 475f465e676dd05c2a76456414e8f4d2ddd83099b17ec4085f998d68d0b84b99

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