Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc5f4a4667c2385d…

MALICIOUS

PDF

250.0 KB Created: 2021-02-26 15:01:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: c00b344cf82cecbd389909b8375e03ba SHA-1: 9c9464f2402904ef120fc34fc302740d48e39899 SHA-256: cc5f4a4667c2385df61f65e1112819bc5b3cd584e200ada8d74ed7c4566e42ac
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The file was detected as a phishing PDF by ClamAV and an ML classifier, and it contains heuristics indicating brand impersonation for credential phishing. The document body is heavily obfuscated, but the presence of embedded URLs and the overall detection suggest it attempts to lure users to malicious sites, likely for credential harvesting. No scripts were extracted, but the PDF structure itself likely contains exploit code.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9970

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
  • Brand-impersonation credential phishing lure critical SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: action link to abused redirector https://pitefomut.weebly.com/uploads/1/3/2/6/132682610/619465.pdf.
  • 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/wb?keyword=what%20is%20educational%20leadership%20and%20policy%20studies PDF link annotation
    • https://pitefomut.weebly.com/uploads/1/3/2/6/132682610/619465.pdfIn PDF document text
    • https://zodemabu.weebly.com/uploads/1/3/4/8/134896511/datojiw.pdfIn PDF document text
    • http://zonizubiro.getenjoyment.net/fuzovafavosufuvuxepi.pdfIn PDF document text
    • http://raxejudesezix.scienceontheweb.net/how_to_use_hair_dye_without_developer.pdfIn PDF document text
    • http://sanatoriy-izumrudny.ru/83177943450f6w3e.pdfIn PDF document text
    • https://suwesinorilofev.weebly.com/uploads/1/3/4/0/134096988/1388ff.pdfIn PDF document text
    • https://wiloropijevor.weebly.com/uploads/1/3/5/2/135299547/fajojukupo_sitapab.pdfIn PDF document text
    • http://vuvulusigi.scienceontheweb.net/98492058079.pdfIn PDF document text
    • https://pejivepomut.weebly.com/uploads/1/3/5/3/135339444/gebun.pdfIn PDF document text
    • http://quickstore.pro/writing_a_proposal_for_your_dissertation_guidelines_and_examples6ycat.pdfIn PDF document text
    • https://konilusikiwi.weebly.com/uploads/1/3/3/9/133986353/5656184.pdfIn PDF document text
    • https://gefetejumifigo.weebly.com/uploads/1/3/4/6/134688955/6500482.pdfIn PDF document text
    • http://marinarus.space/el_son_de_la_negra_bailewq8es.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/jinabom/88246874335.pdfIn PDF document text
    • https://s3.amazonaws.com/wesezuzuvalirik/mr_dieingly_sad_sheet_music.pdfIn PDF document text
    • http://kedisijusa.onlinewebshop.net/88904653722.pdfIn PDF document text
    • https://s3.amazonaws.com/tiniruru/wikiwosasazebetalinezowus.pdfIn PDF document text
    • https://s3.amazonaws.com/kovilowab/kisezipodigolite.pdfIn PDF document text
    • https://s3.amazonaws.com/wibadinavosunom/63549982023.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_off00039fad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x39FAD 5276 bytes
SHA-256: cc438d88b5e360b0801587016659c3d4e5627add0a5a86996407003ffc0161a2
font_01_sfnt_off0003b1a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3B1A9 12016 bytes
SHA-256: 5d9e19dab7897b60baeee43734bcea3162a09f9bbc2e1c0e5ce19351f3d2e132

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