Malicious PDF — malware analysis report

Static analysis result for SHA-256 3527e1537419296e…

MALICIOUS

PDF

87.5 KB Created: 2021-04-02 04:33:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-10
MD5: a7b09be60e3f895ea538ebec5ee7fa47 SHA-1: a7a2d85eea707af9124de5eb42d9727f53eedca6 SHA-256: 3527e1537419296efdbaf07ed6ce03525da3e89e27ff9f1245cbc1ab1f91c463
126 Risk Score

Malware Insights

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

The sample is a PDF file flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URL pointing to a suspicious domain, which is likely part of a phishing lure. The document body, though heavily obfuscated, suggests a deceptive download prompt. No scripts were extracted, but the PDF structure and embedded URIs indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://xajibur.ru/award?keyword=monthly+current+affairs+capsule+pdf+download PDF link annotation
    • http://itclick.pro/how_to_draw_depth_in_a_picture7wt96.pdfIn PDF document text
    • http://suzenax.22web.org/wodisasopidinoto.pdfIn PDF document text
    • http://vunufem.iblogger.org/worewejosonuvotinojaja.pdfIn PDF document text
    • http://kersita.fun/2020_ford_explorer_launch_problemsgpw61.pdfIn PDF document text
    • http://extrameets.fun/4618168710sbsvf.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/4b528dbc-1995-42cf-a5a8-5bb34fc22f75/wezatixosunuwo.pdfIn PDF document text
    • https://c7fb3737-a2fb-4e06-b71d-f78b648bb0a4.filesusr.com/ugd/a9248e_de5ea93d0d4349ed8f0ac23364c3d402.pdf?index=trueIn PDF document text
    • https://254a6a59-343e-4b7e-907c-c4819e171fff.filesusr.com/ugd/decf6f_7a77e60c7fd5456e9933f7f877a67749.pdf?index=trueIn PDF document text
    • http://kiviritibudemo.epizy.com/god_alone_gyanamata.pdfIn PDF document text
    • https://s3.amazonaws.com/vinejivunitego/nutumavovu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/77a5e12b-bfc4-4465-a3dc-1e13d1c42aba/4637449356.pdfIn PDF document text
    • http://zuloxuso.epizy.com/kafutaxiv.pdfIn PDF document text
    • https://6b54b0b2-91db-43cc-88c8-bbc4f7e20b37.filesusr.com/ugd/a773aa_dc74ecbb45b94c329b66d1d11308ac34.pdf?index=trueIn PDF document text
    • https://ddf64d59-5240-4154-9987-17dfc28e22c7.filesusr.com/ugd/cec570_3c46fc6cc0fe43418ffe3666e89124b6.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/kobivimelelo/cathy_lee_crosby_husband.pdfIn PDF document text
    • https://780c8f77-0f51-49ab-8dd1-60a90eb210a4.filesusr.com/ugd/1b8612_7450f23f9ffe4cfea91897a8c60e0ff6.pdf?index=trueIn PDF document text
    • http://lefegosab.epizy.com/89439022360.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f5502351-f1e9-496c-b6e5-fbc7604b0104/arcsoft_showbiz_5_activation_code_free_download.pdfIn PDF document text
    • http://regujag.rf.gd/nakux.pdfIn PDF document text
    • http://noxebujo.epizy.com/35017651394.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010168.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10168 5440 bytes
SHA-256: c3ceaba919ec5952831627fffb41d98342430595b32e7a33c177df4c82db7c21
font_01_sfnt_off0001140a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1140A 11428 bytes
SHA-256: 3bdada5daaeea1a5dd87184583061378d347f4e48c33e53b83db32502a4b92f4
font_02_sfnt_off00013b27.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13B27 16164 bytes
SHA-256: ebd2804bff382343e08f6a42dc45f69f4e794c08b23908ae60ba78ededae74b1

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