Malicious PDF — malware analysis report

Static analysis result for SHA-256 86feea0aac6fa93e…

MALICIOUS

PDF

71.4 KB Created: 2020-11-22 02:44:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 9da5476b953cf14ce84556d6a06a05ac SHA-1: 7b6f905491dd8408b710fd4672a255b0d5cb5c8d SHA-256: 86feea0aac6fa93ed490be16657cd9968d20a192cc64b2af56d480dc373fd58b
156 Risk Score

Malware Insights

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

The PDF contains numerous external links, with one prominent URL suggesting a lure for an "anime face maker go pro apk". The ClamAV detection and ML classifier strongly indicate malicious intent, likely phishing or malware distribution. While no scripts were directly extracted, the PDF structure and embedded links are indicative of a malicious campaign aiming to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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 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.
  • 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://traffnew.ru/aws?utm_term=anime+face+maker+go+pro+apk PDF link annotation
    • https://wejakoguxi.weebly.com/uploads/1/3/4/3/134324676/rixipaj-kanavimerajo.pdfIn PDF document text
    • https://besavijoxamidu.weebly.com/uploads/1/3/4/0/134096513/rurimigivod-kaledozivobixa-xekifo.pdfIn PDF document text
    • https://fijojonibiw.weebly.com/uploads/1/3/2/6/132681787/613a711ec7ef.pdfIn PDF document text
    • https://wuwawibef.weebly.com/uploads/1/3/4/6/134608234/durigob.pdfIn PDF document text
    • https://vomenipof.weebly.com/uploads/1/3/4/5/134585177/7571565.pdfIn PDF document text
    • https://vopevejefed.weebly.com/uploads/1/3/1/6/131606133/6941374.pdfIn PDF document text
    • https://zutuwukesid.weebly.com/uploads/1/3/4/6/134624341/4684667.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/gomakobez/for_sale_baby_shoes_never_worn.pdfIn PDF document text
    • https://s3.amazonaws.com/senodiw/ginobotuzikaromose.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c11f2bab-e1dc-430a-9508-2d351e7a4901/budawotixezokugub.pdfIn PDF document text
    • https://s3.amazonaws.com/bisazabe/unblocked_games_happy_wheels_for_school.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/23b889af-ab2b-4d57-8c83-4082a55e8bde/38355575814.pdfIn PDF document text
    • https://s3.amazonaws.com/xuzed/remote_mouse_app_for_pc.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c041814f-8a64-4b51-8831-a5b086a5b44d/33231972072.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d06e8c0f-34a0-4a31-a6b9-c5274a62ec23/89493934738.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b799.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB799 3604 bytes
SHA-256: 70a97479a4ee2b9e7f70de908343c749e9fa127ae55a9bf144312145db90c344
font_01_sfnt_off0000c45f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC45F 5180 bytes
SHA-256: 9beb1edcba6a7ced32ff21b1be62d9bf3cf0055cadce44510960d47a39c99adc
font_02_sfnt_off0000d5f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD5F0 11268 bytes
SHA-256: fc917759a35aae3c3416d3b87215a5c9c03641840303cf290ebdaf1d2d95b033
font_03_sfnt_off0000fb81.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB81 16092 bytes
SHA-256: 9af6fc3bf9d751f70540aea0fa47faa159a3604992cda23d2adcda3ffc5346b2

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