Malicious PDF — malware analysis report

Static analysis result for SHA-256 92235be05152b564…

MALICIOUS

PDF

95.7 KB Created: 2021-03-12 03:51:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: c7c15a7f1a462a8d9644005b3a950fe4 SHA-1: 58987d8f65177c4e04a6ebe4b59d09092d74d2da SHA-256: 92235be05152b5645400306b5ba65f97fb72952862841dab18288bf855939801
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 0.9983

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://jacksth.ru/123?utm_term=chimani+pakhar+songs PDF link annotation
    • https://cdn.sqhk.co/nufesewepi/gkdPcgf/89904923685.pdfIn PDF document text
    • https://cdn.sqhk.co/malevevipali/YjaTWvL/canvas_parent_account.pdfIn PDF document text
    • https://cdn.sqhk.co/pomiziluda/inhj3jc/jatixuvasesutuzanizul.pdfIn PDF document text
    • http://tovarajuxelogag.iblogger.org/cbc_manual_differential_interpretation.pdfIn PDF document text
    • http://mujabelor.mywebcommunity.org/echo_srm_225_trimmer_head_disassembly.pdfIn PDF document text
    • https://cdn.sqhk.co/kiviziko/p6gfF5D/backup_apple_music_s.pdfIn PDF document text
    • http://nanonewe.scienceontheweb.net/divamakopoweti.pdfIn PDF document text
    • http://lazujifoxupa.getenjoyment.net/5316040678.pdfIn PDF document text
    • http://xomuxeje.22web.org/93644892183.pdfIn PDF document text
    • http://myluckywin.site/bunion_corrector_platform_sandals_australiapr8m5.pdfIn PDF document text
    • http://hotita.space/94162764094fy8u9.pdfIn PDF document text
    • http://antonioit.fun/931478906239asf2.pdfIn PDF document text
    • http://prostosite.site/ejemplos_de_densidad_en_la_vida_cotidiana1ldfs.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • https://6525eaf8-9a42-4119-9fb4-c3d475b3b78e.filesusr.com/ugd/80bfa9_c09e404c07c04e38ae3075bb32662462.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/918a7dff-2e32-4c28-a766-385eaa32d407/toro_lx425_deck_parts.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b6744136-27f0-4d2d-9c3c-9f950925c7a8/how_fast_is_a_2013_dodge_avenger.pdfIn PDF document text
    • http://kenuzuwemonuda.epizy.com/fiwexigotubikizolun.pdfIn PDF document text
    • https://973697ad-ffa4-4f9d-85cd-0c9d1ea039ee.filesusr.com/ugd/5f5755_4fb082a62edf40f0a95075c70eeb3385.pdf?index=trueIn PDF document text
    • http://nonilugubosaz.epizy.com/75174416174.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/53e9d049-0286-4e3a-ab8c-2af89447b770/harry_potter_book_series_hardcover.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8c56fb21-0b1d-4ecd-b19b-ce925616f531/50151874738.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/712f8a3a-37cc-4235-9051-3865d3c1f4dc/petty_and_cacioppo_1986_elaboration_likelihood_model.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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fd94.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD94 5168 bytes
SHA-256: 394d8fde35eac5ab9e32af46a207179c1299f1daa5b0e484deac8355a517ba6b
font_01_sfnt_off00010ef0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10EF0 3152 bytes
SHA-256: 257cb4cdc721b9299286345b8062c08d5152f0be7d0ec83794bb40df7a18a589
font_02_sfnt_off00011bb2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11BB2 10200 bytes
SHA-256: 624ad9ebd7ac1b6bec959f20333b042485ec88549392ac71edf38779553aeb7c
font_03_sfnt_off00013eef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13EEF 16620 bytes
SHA-256: f2f55904e1489a435fca2a623a8f6354dfe176d6eb1e60daccd8c05409922453
font_04_sfnt_off000155d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x155D6 7488 bytes
SHA-256: 90e4357e7bc2e346ccd769847f13b307df74a9c755273fe82794ac21b6b7625e