Malicious PDF — malware analysis report

Static analysis result for SHA-256 23bf1ec9aa29219a…

MALICIOUS

PDF

88.5 KB Created: 2021-03-20 23:36:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-20
MD5: 0147a6a0d0f977b7d07abb540875d65e SHA-1: 4392a36e1fc695cb026766fb80360f4b48ea2608 SHA-256: 23bf1ec9aa29219acfea0d451ba44dba7295860645020f8b3d60d3feb5b8d049
186 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document contains a large number of external links, many of which are hosted on disposable domains and appear to be part of a link farm designed to direct users to potentially malicious content. The primary external URI, 'https://fokemale.ru/123?utm_term=pardesi+anthem+video+song++pagalworld.+com', suggests a lure related to popular search terms. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 6

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://fokemale.ru/123?utm_term=pardesi+anthem+video+song++pagalworld.+com PDF link annotation
    • https://sogatetemurus.weebly.com/uploads/1/3/4/3/134379625/biposukufu.pdfIn PDF document text
    • https://punafatig.weebly.com/uploads/1/3/1/4/131408139/zezudaduxusoj.pdfIn PDF document text
    • https://zirizimupu.weebly.com/uploads/1/3/4/0/134017553/3716a8a0b247cf.pdfIn PDF document text
    • https://sewizafisebe.weebly.com/uploads/1/3/1/4/131437566/merasogun.pdfIn PDF document text
    • https://petizigosi.weebly.com/uploads/1/3/4/9/134903326/4995025.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://uploads.strikinglycdn.com/files/708f27c9-c881-44af-9077-3c8c9c954aca/gejulofagusikupepufegoni.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e1166a9d-7174-4bac-a4d8-427182370f86/58556457601.pdfIn PDF document text
    • https://275320ff-96dd-455a-9699-a0fdc58b27a5.filesusr.com/ugd/943725_a6b965e0345d461192c8cb4c4e03bf2d.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/d500de89-3fcd-44fb-a34a-a8e03f325a48/is_percy_jackson_on_netflix_2020.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/23ee42d6-5fc0-49e5-9dbb-25837a618bf4/minigoza.pdfIn PDF document text
    • https://28ae28a3-27cc-4d38-be83-0de1f6925f83.filesusr.com/ugd/454016_79ee7034fef649d9b3c98c1df7b911d4.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/0c160290-9832-4bb1-81bc-48276d4cdca7/tabela_fipe_de_carros_usados_volkswagen.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/af2200d1-64ef-4f6a-b3c1-6f700db5012c/nicky_cruz_cross_and_switchblade.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9e2f686a-e8cd-4208-b301-162e55e9694a/excel_formulas_not_updating_when_sorting.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/42828273-a250-474a-8d3f-1267e036b6bd/23106479642.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0b7b8a12-9121-4d7c-93f4-985d8d51db02/what_is_the_biblical_role_of_a_husband.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c76f6b57-aae4-4b54-8a15-27866c9b241b/162857352.pdfIn PDF document text
    • https://f39f7cea-6337-46de-af4f-699959e6db0a.filesusr.com/ugd/004672_f4910d07153347ac8bf24a556cf255d8.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/c3301231-5297-4633-abde-0547eb3cb250/2007_jeep_grand_cherokee_for_sale_craigslist.pdfIn PDF document text
    • https://b01ec662-dec5-4f54-b977-8708717d6054.filesusr.com/ugd/07e02c_6f3b0a66063140de90b4cd9571c9fb73.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/d7c01164-b592-4450-9090-18e2cf9207db/xinukepurolugumuwaw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4b40ef72-3318-453a-8a72-545db836e58e/how_much_oil_does_a_onan_4000_generator_take.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010bc1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10BC1 5460 bytes
SHA-256: e12cbb2c7f04448d0dfc9f09f89f0f6a00815ca5c3cee5f74e7fc0260469ff08
font_01_sfnt_off00011e3b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11E3B 12028 bytes
SHA-256: 9b9384a7a9ce220a02b0e0c33099791a172138cd74c4f5ca0fa093548f78e9d6
font_02_sfnt_off00014689.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14689 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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