Malicious PDF — malware analysis report

Static analysis result for SHA-256 e12b78af9170d8a5…

MALICIOUS

PDF

75.6 KB Created: 2021-03-13 23:41:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: e1cbe34b478fe34cecc53868a0422a9a SHA-1: 5f1bd755ce5d14018d9cf9cb19f555d971d0a8e3 SHA-256: e12b78af9170d8a53ee7ac21c49bfe9668ec3680aefc30c681ab78784bdb4c49
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-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://dugedepap.ru/123?utm_term=paper+chromatography+pdf PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4417656/normal_5ff0086761d53.pdfIn PDF document text
    • http://lifuzerewema.iblogger.org/how_to_use_oracal_631.pdfIn PDF document text
    • http://figimumagoko.mygamesonline.org/fz_meter_cable_price.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372963/normal_5fe82934a94e0.pdfIn PDF document text
    • http://bulepozobagepud.mygamesonline.org/dijiduvolidakokozezat.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407331/normal_5fdc43e228726.pdfIn PDF document text
    • http://vuruvuzivad.22web.org/msi_h81m-e33_v2_bios.pdfIn PDF document text
    • http://jilududegurim.22web.org/98268651212.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/1b750db5-3d7a-48e0-8495-a213db165e40/para_leer_al_pato_donald_epub.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/09c10ee1-4fe4-465e-829e-ed36972c3aa5/bedanovozerutek.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/05ac69f2-83cc-46c3-9f2a-88390b0f7594/74553938446.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eb657106-10e1-41af-a6c2-54c8e839f497/hermosas_criaturas_libro.pdfIn PDF document text
    • http://zajegugolex.epizy.com/acer_laptop_power_button_not_working.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/88ec8db2-01c8-478d-b2f9-6ae74170f409/kijotiburigimeperopuda.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/75dc9e43-c361-497f-9e22-4040da9ea43a/what_to_do_when_no_quorum.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/abf7faf6-6d56-433b-8f89-39b64c16e6ce/embedded_c_programming_tutorial_microcontroller.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/26fa45db-9273-4597-80af-a86407f891b5/91520018129.pdfIn PDF document text
    • http://kepagewav.atwebpages.com/komoninegivilefi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/adb8eaf9-f3f9-45cf-81c7-46e2d87f122c/acido_sulfhidrico_formulacion_quimica.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/caa72cf7-9a15-49ce-82ff-5859b9d05996/jikugizobe.pdfIn PDF document text
    • http://tavoxelelenasi.onlinewebshop.net/toto_washlet_s550e_installation.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2f71be0e-4870-4e63-a487-979d3e2a9947/which_is_not_an_example_of_effective_interpersonal_communication.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_off0000eb1a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB1A 5464 bytes
SHA-256: fb147a14d3dcee8f030bbff8260d0c6e3a80734d1f9c9f22bab9afcd552fea83
font_01_sfnt_off0000fd94.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD94 10452 bytes
SHA-256: 2210837fc00cd4387f0d1fa68ee93e9940c568ffd5db1e018e34f5a1678a0f7c

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