Malicious PDF — malware analysis report

Static analysis result for SHA-256 5886f2902df527aa…

MALICIOUS

PDF

91.5 KB Created: 2021-03-22 23:15:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: d0aced208ae0e05d5452b0dc18a8bb70 SHA-1: caae5002ff6ac31c2654bc2b5e81a24159128824 SHA-256: 5886f2902df527aaf36d6aa58272cfb21ad2bbdeb4c665dfa0b3d28e4877b9d4
134 Risk Score

Malware Insights

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

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 and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9817

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 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://seumenha.ru/123?utm_term=anker+powerhouse+200+manual PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4417327/normal_601b17fc73033.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4386594/normal_5fc769908a49e.pdfIn PDF document text
    • http://dusejetiwogodad.getenjoyment.net/caida_del_cordon_umbilical.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470220/normal_6030327de5445.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4496582/normal_5fd12b9fbbe01.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4412897/normal_5ffc71d94ea16.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426407/normal_5fe6a822994f2.pdfIn PDF document text
    • http://voxamuzovo.22web.org/janatha_garage_songs_doregama.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459054/normal_60212c8a0907a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382953/normal_601b0db2c2e81.pdfIn PDF document text
    • http://jinokonur.22web.org/xivenuxe.pdfIn PDF document text
    • http://zipubezexupoka.mywebcommunity.org/d_and_d_books_for_sale.pdfIn PDF document text
    • http://zumufufup.sportsontheweb.net/16006471224.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427526/normal_6014bc191ae2d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4415321/normal_6000e45ba3b9d.pdfIn PDF document text
    • http://kidufamipowanot.mywebcommunity.org/how_to_enter_bios_setup_in_hp_pavilion_dv6_laptop.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.opentle.orgIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://332892e0-6a2b-40ad-946e-e7c92c61c867.filesusr.com/ugd/3e5d97_b3aa7211a3bf48f7823b80347d0e1432.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/verirejon/wesinezupamesomana.pdfIn PDF document text
    • https://1c54689f-8f60-44d8-8d81-b144d6ea8ada.filesusr.com/ugd/787b0a_c17ae3fafe55413d8b666f8479d48d67.pdf?index=trueIn PDF document text
    • https://1a447ccf-a6a5-490c-ad31-399ae8169532.filesusr.com/ugd/cf5184_9b428b3b0cde462294a55e43891d5a17.pdf?index=trueIn PDF document text
    • https://0306adf0-382e-42f1-903d-71c3961c97f1.filesusr.com/ugd/7ff653_4d0fb21461c242e1a2b86259867e4fbb.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/tugafebip/43587740503.pdfIn PDF document text
    • http://sakikuzugodo.rf.gd/69825398657.pdfIn PDF document text
    • https://aaf8962b-2ea5-4403-bfea-7c32f2b3f77e.filesusr.com/ugd/8f3a65_7b63c9badf0b45a7a0ded35d20afb7d9.pdf?index=trueIn PDF document text
    • http://wulakutagugizi.rf.gd/47906389813.pdfIn PDF document text
    • https://s3.amazonaws.com/sazomo/which_clothes_steamer_is_the_best.pdfIn PDF document text
    • http://koxigumom.onlinewebshop.net/analysis_of_survey_data.pdfIn PDF document text
    • https://s3.amazonaws.com/womirofop/augmented_reality_seminar_report.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.gnu.org/licenses/gpl.htmlIn 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_off0000f28b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF28B 5232 bytes
SHA-256: 249f23575b9c41d3b91c7281a153d230e16c56e0057429ded951b3dc7e57e177
font_01_sfnt_off0001041d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1041D 6792 bytes
SHA-256: f541861a7a6db937122ff007b059f3729fd743faa564570aa322af4e74bde208
font_02_sfnt_off00011645.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11645 10960 bytes
SHA-256: bfe320bee75427e9945803c904812e2344a26a9eb69f769310fef69531e7e934
font_03_sfnt_off00013bd8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13BD8 16092 bytes
SHA-256: 39b2f4b99ee08965fd4836f89f628a00cde8346cb181131bba0308e80db8fb67
font_04_sfnt_off0001509f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1509F 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34