Malicious PDF — malware analysis report

Static analysis result for SHA-256 fb7189f41ce8ee24…

MALICIOUS

PDF

95.8 KB Created: 2021-05-20 15:53:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: fef79364e7e2cc909cd37023d9d02b97 SHA-1: 57a4640002b97b2cd3781d17277c333d06a4a2b9 SHA-256: fb7189f41ce8ee248dd532ee8d6572ec4e809ed26e563342bacf3a886975642d
216 Risk Score

Malware Insights

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

The PDF contains numerous external links, with one heuristic specifically identifying a brand-impersonation credential phishing lure pointing to a redirector. The ML classifier and ClamAV detection strongly indicate maliciousness. While no scripts were directly extracted, the PDF structure and heuristics suggest it's designed to lead the user to a phishing site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 6

  • 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 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.
  • 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://kufudazasa.weebly.com/uploads/1/3/4/6/134626120/6952792.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://vilenefex.ru/strik?utm_term=do+you+italicize+the+title+of+a+documentary PDF link annotation
    • https://kufudazasa.weebly.com/uploads/1/3/4/6/134626120/6952792.pdfIn PDF document text
    • https://riwipawubo.weebly.com/uploads/1/3/1/4/131453561/jupiz.pdfIn PDF document text
    • https://tubadelemifevit.weebly.com/uploads/1/3/4/5/134509228/ddf4df43d87391.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/simujix/foxigafozuxofipekevaza.pdfIn PDF document text
    • https://s3.amazonaws.com/dopugaxelelema/casio_illuminator_ae-_1200wh_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/bifadiwuwileji/cuggl_deluxe_superlight_travel_cot_sheet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fce59beb-8df4-4ccd-bcea-b9c1a553c7c4/55625571638.pdfIn PDF document text
    • https://s3.amazonaws.com/lusabifef/videoder_premium_apk_14._4._2.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1a87c4d5-3460-4c27-8128-492205d344a7/vazemogorawunepotokisaxa.pdfIn PDF document text
    • https://s3.amazonaws.com/rizijubovapuk/busutalidifek.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0c8e2b1a-6a6b-4608-bf63-fb2318e859cc/photive_s10_bluetooth_speaker_review.pdfIn PDF document text
    • https://s3.amazonaws.com/dexodekelaseki/12279076993.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c5c17a23-9b3b-4846-b335-4389ee9a594c/aimpoint_pro_patrol_rifle_optic_red_dot_riflescope.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dd208435-78fb-46fe-bd4b-eda193408668/service_manual_hp_designjet_500_italiano.pdfIn PDF document text
    • https://s3.amazonaws.com/nitajosasa/arangetram_tamil_movie_songs.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/71cd2b8b-8a25-4557-b851-1d2076daab8a/pdf_architect_2_activation_key_free_download.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
    • https://savannah.gnu.org/projects/freefont/In PDF document text
    • http://www.gnu.org/licenses/In PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlIn 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 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e6c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6C4 6416 bytes
SHA-256: 62deedb54aaef669db635f4ef87d4bda5d475a8bf20633d6b56d9e4ab12fd410
font_01_sfnt_off0000f699.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF699 5236 bytes
SHA-256: 58a13fb96539e79eb447c24d1c7627686b506d56541b8bb5e3a716ba339d5e09
font_02_sfnt_off0001084c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1084C 11268 bytes
SHA-256: 3d2153d400ba05f992b291c3b6ee097f7042c4ccfcd5a174969b9e4783cd97d0
font_03_sfnt_off00012c6b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12C6B 10920 bytes
SHA-256: ab1d40f44dd880cd502163562096d218e9559e4ba234f02d33b06d71506dcc95
font_04_sfnt_off000151df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x151DF 16256 bytes
SHA-256: ade860a384e0436df56bb84eeed4a9486ec680d7c8981cdb0c3745c5e2239263
font_05_sfnt_off0001673a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1673A 1736 bytes
SHA-256: 74be5bc4d46f64e5c506ae1006f7022dc98ebf960e37c7bf417c2027ca73106d

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