Malicious PDF — malware analysis report

Static analysis result for SHA-256 26a0342161a8673b…

MALICIOUS

PDF

75.9 KB Created: 2021-03-19 20:26:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 28d5feca16f670ddfb32e9ff3b1fe413 SHA-1: b2db7b915bcd3d46596420d5b2199ca7bcc230d2 SHA-256: 26a0342161a8673b43a2e3c1c31f64b0192661c05ffc2d7590ea21d25e76baf6
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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://zajinet.ru/strik?utm_term=how+long+does+dewalt+leaf+blower+battery+last PDF link annotation
    • http://gosoxegekiri.mywebcommunity.org/zovanufalulakidodezebax.pdfIn PDF document text
    • http://befotuke.mywebcommunity.org/what_is_meaning_of_public_administration_in_marathi.pdfIn PDF document text
    • https://cdn.sqhk.co/nomuzali/efgjPhe/25524878900.pdfIn PDF document text
    • https://cdn.sqhk.co/pigexebobe/aJvwbvx/talajasegimidixozojit.pdfIn PDF document text
    • https://gososeru.weebly.com/uploads/1/3/4/5/134597059/3971558.pdfIn PDF document text
    • https://rewajugelawuz.weebly.com/uploads/1/3/0/7/130738764/dopakeguvirudojid.pdfIn PDF document text
    • https://jafukixago.weebly.com/uploads/1/3/1/3/131380625/kepufixujujatujelesa.pdfIn PDF document text
    • http://my-favshopg.online/rebagitakl44rt.pdfIn PDF document text
    • https://cdn.sqhk.co/rasetiwulipu/ijh834I/81013546703.pdfIn PDF document text
    • https://botasapozav.weebly.com/uploads/1/3/1/6/131607984/2336770.pdfIn PDF document text
    • http://veselutut.mywebcommunity.org/que_establece_la_ley_de_ohm.pdfIn PDF document text
    • https://cdn.sqhk.co/nugopanage/dstLBqC/brain_work_physics_puzzle_mod_apk.pdfIn PDF document text
    • https://gopopozemilin.weebly.com/uploads/1/3/0/8/130874381/zemezitesamo-gabegogene-kugutorejogi-sutuvugatujid.pdfIn PDF document text
    • http://ladekepevij.mygamesonline.org/19293325998.pdfIn PDF document text
    • http://kpovli.ru/pibivofitezupukugugonuw3u2ri.pdfIn PDF document text
    • http://fasekafalig.scienceontheweb.net/12775691663.pdfIn PDF document text
    • http://udilische.club/lock_screen_hd_wallpapers_for_androidjzbzu.pdfIn PDF document text
    • http://fanuvazav.scienceontheweb.net/duporinuzixikanuweb.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://naxesabefadufu.atwebpages.com/intro_to_java_programming_comprehensive_version_global_edition_11_e.pdfIn PDF document text
    • https://s3.amazonaws.com/bifadiwuwileji/pelugaladevexaxetuzoj.pdfIn PDF document text
    • https://s3.amazonaws.com/jepavilutabilel/neonatal_syphilis_cdc_guidelines.pdfIn PDF document text
    • https://s3.amazonaws.com/kasuwevovog/neonatal_abstinence_syndrome_scoring_guidelines.pdfIn PDF document text
    • http://tudugir.atwebpages.com/peter_drucker_management_cases.pdfIn PDF document text
    • https://s3.amazonaws.com/lakadutof/76867127238.pdfIn PDF document text
    • https://s3.amazonaws.com/fowikorejodi/83275961143.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_off0000ea06.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA06 5372 bytes
SHA-256: e22daa10f5f72ca39138a13c617ff3e20d8f0ed98636048fd6f11ad3ecf43f4c
font_01_sfnt_off0000fc74.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC74 10780 bytes
SHA-256: 4cc64e98b1a278f5c6a2670940653582eb8de7a211449d64f352cca5a9eedf5c

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