Malicious PDF — malware analysis report

Static analysis result for SHA-256 5632542a6359e86e…

MALICIOUS

PDF

87.5 KB Created: 2021-03-10 03:06:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: c7bc60e811a82eab6423fb94ad5a2ce8 SHA-1: 9abe5a030d42e6a7e7219f08241f4f725928c2d6 SHA-256: 5632542a6359e86efe3f6828522910fb929a4acd404609cb18348d3e707d8968
126 Risk Score
Tags
free-cdn-ebook-manual-lure

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 0.9996

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://dafemum.ru/aws?utm_term=1984+mercury+black+max+150+manual PDF link annotation
    • http://itravelgr.com/tipos_de_descripcion_literaria5uora.pdfIn PDF document text
    • http://choosemadam.site/lidamupitokeduslbfpg.pdfIn PDF document text
    • http://natur-bio.space/34292391001ox0a3.pdfIn PDF document text
    • http://runmasten.online/jitivemiremidexa3j0u9.pdfIn PDF document text
    • http://wojisub.mypressonline.com/lg_tablet_stuck_on_verizon_screen.pdfIn PDF document text
    • http://hookup754.fun/acg_practice_guidelines_crohn_s_disease5xtg4.pdfIn PDF document text
    • http://sesesuruko.mypressonline.com/arby_s_menu_prices.pdfIn PDF document text
    • http://atlas-copco.su/77099058989ehabr.pdfIn PDF document text
    • http://sq11mini.com/45684839839nvt65.pdfIn PDF document text
    • http://whitetwo.space/mivukuzasasusesos6i42.pdfIn PDF document text
    • http://astropsychology.site/the_road_less_traveled_book_coverxw0dj.pdfIn PDF document text
    • http://stassikorskyi.com/delobiborufanimudurumev3d3m8.pdfIn PDF document text
    • http://zovolexune.sportsontheweb.net/caderno_de_encargos_sudecap.pdfIn PDF document text
    • http://usejus.club/lonegmh348.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/kabisebax/your_wish_is_your_command_meaning.pdfIn PDF document text
    • https://s3.amazonaws.com/werowibovezoje/84103621634.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e3ff7fe2-d5ae-4848-8aff-3526408bc4c4/10053184465.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f80d889f-81ef-4b94-a467-dacc49e9d7d0/30123161786.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4ce2555b-aeea-4d2c-bab6-7ac6bd59d921/descargar_musica_ana_gabriel_huelo_a_soledad.pdfIn PDF document text
    • http://tikeresepujel.onlinewebshop.net/d-link_wireless_network_camera_dcs-930l_setup.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://www.geocities.com/mitra_anirban/hobbies.htmGNUIn PDF document text
    • http://www.gnu.org/copyleft/gpl.htmRegularIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fdcf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFDCF 5448 bytes
SHA-256: 42f05db0aa73af9f169110c06aee2738461270b8778eac901d374f74e12dc619
font_01_sfnt_off00011041.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11041 3720 bytes
SHA-256: b91f3c26f37c28538ed09035cbea6f9221827f1e30b50c452f08cc820bcc167b
font_02_sfnt_off00011ba4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11BA4 11496 bytes
SHA-256: b897675f9cd6367d1e1223f0644509511ba2c0c9ced5f73c0210eb8be33baa01
font_03_sfnt_off00014246.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14246 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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