Malicious PDF — malware analysis report

Static analysis result for SHA-256 71771059daa6e063…

MALICIOUS

PDF

114.1 KB Created: 2021-02-25 13:13:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 466f4b1164e624fa25b69c984e1d35e2 SHA-1: cab21f2308aadc3719c5f91dad589444c42ad472 SHA-256: 71771059daa6e0634e1ec542eb7b067acf196d941950522685e90981a63d6aa1
156 Risk Score

Malware Insights

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

The PDF file contains numerous external links, many of which are part of a link farm designed to appear as search results for 'ios 7 launcher apk xda'. The ClamAV detection and ML classifier strongly indicate malicious intent, likely phishing or malware distribution. While no scripts were explicitly extracted, the PDF structure and embedded URI heuristics suggest it's designed to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • 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 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://jottigo.ru/wix?keyword=ios+7+launcher+apk+xda PDF link annotation
    • http://giwapozolaleg.mypressonline.com/tovideposeloxomafoxa.pdfIn PDF document text
    • http://dommasters.site/google_ebook_er_apkofffu.pdfIn PDF document text
    • https://cdn.sqhk.co/wujamufaw/1sibyjh/vixibumevasudu.pdfIn PDF document text
    • http://c-advance.space/wevalomudetitilupovino8322q.pdfIn PDF document text
    • https://cdn.sqhk.co/bapulofuw/eegfwie/comic_life_3_tutorial.pdfIn PDF document text
    • http://netzamka.ru/converse_of_isosceles_triangle_theorem_worksheetxj8fj.pdfIn PDF document text
    • https://pekumovulimezel.weebly.com/uploads/1/3/4/3/134363026/f0a15bb.pdfIn PDF document text
    • https://cdn.sqhk.co/zidodovare/iKia3Kw/mukibo.pdfIn PDF document text
    • https://zexonozanefamiw.weebly.com/uploads/1/3/1/1/131163740/gutototiw-fatis.pdfIn PDF document text
    • https://cdn.sqhk.co/lobinazema/OAjjhSX/83952066502.pdfIn PDF document text
    • https://cdn.sqhk.co/vumorumuvogi/LkhgOdY/anti_heroes_in_gothic_literature.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/vudivuzakal/lepoduxa.pdfIn PDF document text
    • https://s3.amazonaws.com/pukiza/birds_nature_sounds_free.pdfIn PDF document text
    • https://s3.amazonaws.com/jadere/90876305707.pdfIn PDF document text
    • https://s3.amazonaws.com/vavale/90610671072.pdfIn PDF document text
    • https://s3.amazonaws.com/taguxif/tamasha_full_movie_480p_filmywap.pdfIn PDF document text
    • https://s3.amazonaws.com/tugumeb/cyberghost_hack_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/wuniku/action_verb_worksheets_middle_school.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_off0001872f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1872F 5308 bytes
SHA-256: 37be529c81037d82371b076a653a02516c82dd9305c703cd91b2ce1f010c489f
font_01_sfnt_off0001993a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1993A 9904 bytes
SHA-256: 9ab599293ced4c52e7aecebfc70e965f2ba525551696b52522093eb7ba31a269

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