Malicious PDF — malware analysis report

Static analysis result for SHA-256 f0502829f095e564…

MALICIOUS

PDF

88.6 KB Created: 2021-04-11 17:47:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 2edec82f8fccdfcc9f729f5a7481e061 SHA-1: 5b0ed17840dfb5936f354fcd9c914a3bdfca869f SHA-256: f0502829f095e56452dd8689c9b7c82c728db72a31e5a61bef84772363f8d77b
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 0.9992

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://dugedepap.ru/strik?utm_term=honda+2200+companion+generator+review PDF link annotation
    • http://gakawisogafuga.mygamesonline.org/tibefilewaza.pdfIn PDF document text
    • https://cdn.sqhk.co/tasokuxu/hYhbjd6/jizopixisata.pdfIn PDF document text
    • http://siwupezomejen.getenjoyment.net/bakemonogatari_novel.pdfIn PDF document text
    • https://cdn.sqhk.co/sajatanugeg/dvzjdgd/lekizibot.pdfIn PDF document text
    • http://kavakedego.scienceontheweb.net/xuzagez.pdfIn PDF document text
    • https://cdn.sqhk.co/pesuxitum/2Oe4PTy/from_the_sea_game_hack_version.pdfIn PDF document text
    • http://zawugudumi.getenjoyment.net/sebojuvi.pdfIn PDF document text
    • http://kimidenexikox.getenjoyment.net/tidegud.pdfIn PDF document text
    • http://o-karte-kopilka.com/5363059248khdv7.pdfIn PDF document text
    • https://cdn.sqhk.co/majumoros/5qieghE/group_video_call_android_studio.pdfIn PDF document text
    • http://daliadiago.com/how_much_do_you_pay_a_pastor_to_officiate_a_weddingelefr.pdfIn PDF document text
    • http://gepatoxax.iblogger.org/adosphere_1_cahier_d_activits_download.pdfIn PDF document text
    • http://virivuluk.getenjoyment.net/asme_b36._10.pdfIn PDF document text
    • https://cdn.sqhk.co/vepefilome/ifXUD8L/kajurusezinomiro.pdfIn PDF document text
    • http://lagejarejitog.mypressonline.com/reaction_mechanism_of_alkenes.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://s3.amazonaws.com/tuxenipup/flat_stanley_book.pdfIn PDF document text
    • http://gurabagoderes.atwebpages.com/cardiac_catheterization_handbook_download.pdfIn PDF document text
    • http://lobopekogolo.onlinewebshop.net/74429756908.pdfIn PDF document text
    • https://s3.amazonaws.com/fusopoxipo/shimano_ultegra_6870_di2_hydro_disc_upgrade_kit.pdfIn PDF document text
    • http://rigagidepa.epizy.com/xenipuravo.pdfIn PDF document text
    • http://geforagegi.atwebpages.com/algebra_basic_definition.pdfIn PDF document text
    • http://xaligapuk.epizy.com/android_lifecycleobserver_fragment.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
    • 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_off0000f6ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6EA 5356 bytes
SHA-256: 4c9ff762b6bbb4b2ec285dd7bbb6ab3831b62a3d84e9254eef1c7c4ef1292309
font_01_sfnt_off00010913.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10913 11224 bytes
SHA-256: 8d6c2fccd9211561e97fe934c798fa9d4eff7ce277233031cfc39f202acdb323
font_02_sfnt_off00012f62.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12F62 16312 bytes
SHA-256: aad9bc0f36eadc3314e08670b59090120051e308b357201f134af3d0b781b2b0
font_03_sfnt_off000144ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x144EE 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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