Malicious PDF — malware analysis report

Static analysis result for SHA-256 c29e33796993a29d…

MALICIOUS

PDF

92.6 KB Created: 2021-03-24 04:27:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-10
MD5: dc4138e5dab9f46b6249dc9a8acd2ed0 SHA-1: c1800272f09008d54d295793682bd6e394d2f8f7 SHA-256: c29e33796993a29d259c7db178009fc07db0b3779a83f2820c51de2acb0d388f
186 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics as malicious, including a critical ClamAV detection for 'Pdf.Phishing.Trojan'. It contains a large number of external links, many hosted on disposable domains, suggesting a link farm designed to redirect users. One embedded URL points to 'botokaw.ru', which is likely part of the redirection chain.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://botokaw.ru/wix?keyword=admiral+washing+machine+atw4475tq0+manual PDF link annotation
    • https://pajegilawemate.weebly.com/uploads/1/3/4/8/134895984/490484d61a8bca.pdfIn PDF document text
    • https://wamokanudetavud.weebly.com/uploads/1/3/4/5/134510572/jewifiwesiruge.pdfIn PDF document text
    • https://duroxogudoli.weebly.com/uploads/1/3/4/3/134318703/sarizafi.pdfIn PDF document text
    • https://cdn.sqhk.co/wibetaxor/dgeyihd/xugutigil.pdfIn PDF document text
    • https://cdn.sqhk.co/jukapaba/gdjghhA/meridian_157_chapter_1_metal_cabinet.pdfIn PDF document text
    • https://minebetedobipas.weebly.com/uploads/1/3/2/6/132696067/9a5d220c746ae.pdfIn PDF document text
    • https://cdn.sqhk.co/pubabolab/gUL4U4C/tipuxivuxa.pdfIn PDF document text
    • https://cdn.sqhk.co/bowevuva/rKhc1Vm/walmart_delivery_into_home.pdfIn PDF document text
    • https://ganunosor.weebly.com/uploads/1/3/0/8/130814229/kitapipada.pdfIn PDF document text
    • https://zunotexiru.weebly.com/uploads/1/3/4/8/134890048/vumosazufaxemunaz.pdfIn PDF document text
    • https://cdn.sqhk.co/jofijoju/hewha4B/34010348475.pdfIn PDF document text
    • https://gebobofivogaxe.weebly.com/uploads/1/3/5/3/135308574/ririnaxanup.pdfIn PDF document text
    • https://zirotowaze.weebly.com/uploads/1/3/1/0/131070424/pifejevek.pdfIn PDF document text
    • https://limopepubev.weebly.com/uploads/1/3/4/6/134627214/pisupuriwapi-relasimoxutuke-kopivu.pdfIn PDF document text
    • https://cdn.sqhk.co/wezopexa/tichcgi/microsoft_sql_server_database.pdfIn PDF document text
    • https://cdn.sqhk.co/fizuborugas/fib6wn6/idle_evil_clicker_cheats.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
    • https://38f9ccf9-db33-4582-994d-0ea518e52d38.filesusr.com/ugd/368de4_0946d618aaa1408fbe956764167e504f.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/nefagolom/bhagavad_gita_chapter_10_in_telugu.pdfIn PDF document text
    • https://s3.amazonaws.com/zalisujezajaje/lapale.pdfIn PDF document text
    • https://8271b8e8-1520-4b18-8785-2fafc8cd33e6.filesusr.com/ugd/efc97f_0f74101473434854afba3cf6667086c1.pdf?index=trueIn PDF document text
    • https://34e51215-b586-4e01-b3ea-a219475a7b91.filesusr.com/ugd/46481b_df18aaabc688443e9cc677ff81317e76.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000108c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x108C2 5764 bytes
SHA-256: 73b5ff029a668922df42296d40f5aedc3851da70ee4541efab78fdfc0ac75117
font_01_sfnt_off00011c53.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11C53 10840 bytes
SHA-256: 09faa63d5bbc151225ee2c2f8f74c47543edf34e85a260b5352f91ef8081172c
font_02_sfnt_off00014155.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14155 16148 bytes
SHA-256: d612c605d101522a7b082cd092ef78b209dae850c4a5e940dd0f53fb1bc5669f
font_03_sfnt_off00015665.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15665 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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