Malicious PDF — malware analysis report

Static analysis result for SHA-256 c88a62a822c6a01e…

MALICIOUS

PDF

69.8 KB Created: 2020-11-21 08:55:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-03
MD5: 10d01a3675491056d5ccd640d761eff5 SHA-1: 91a542a0c57296a9c30a829bd220d958e0ae17d0 SHA-256: c88a62a822c6a01e2fdcc702dbdc3152ab6a78e39c255c4dc29c0b852bada990
156 Risk Score

Malware Insights

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

The PDF contains numerous external links, a common tactic for SEO link farms or phishing campaigns. The ClamAV detection and ML classifier strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it's designed to redirect users to potentially malicious content, likely for further exploitation or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://trafficel.ru/123?utm_term=window+regulator+guide PDF link annotation
    • https://guferewefozitak.weebly.com/uploads/1/3/4/3/134393558/fagar.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402000/normal_5f911e5169ed4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368759/normal_5f8b489687010.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375070/normal_5f8bc83a8e562.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/jamokaroxoj/78812881056.pdfIn PDF document text
    • https://s3.amazonaws.com/zaxawetawupo/bible_quotes_malayalam_free.pdfIn PDF document text
    • https://s3.amazonaws.com/kezemiradigu/proving_lines_parallel_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/lupebesu/watch_the_conjuring_online_full_movie.pdfIn PDF document text
    • https://s3.amazonaws.com/palikuvexake/lebaneg.pdfIn PDF document text
    • https://s3.amazonaws.com/sibenuvokiwuz/8th_grade_textbook_history.pdfIn PDF document text
    • https://s3.amazonaws.com/wupiwupiwot/nv_dmv_certificate_of_attendance.pdfIn PDF document text
    • https://s3.amazonaws.com/batoragubukepo/26560572675.pdfIn PDF document text
    • https://s3.amazonaws.com/gisujubolidine/actors_studio_interview_with_clint_eastwood.pdfIn PDF document text
    • https://s3.amazonaws.com/kiwopusafize/obtener_informacion_en_ingles.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c7ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC7AB 4800 bytes
SHA-256: 9c652b3f072a46a8b8c0ad237b23c1e9976d8fad5c3032af4ec80b2e5501457c
font_01_sfnt_off0000d81c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD81C 10688 bytes
SHA-256: 5c1fe3abc22fcf4eff5ab4b20120cd96f15e87e0ce5aa07456791f5c1b7fc7c9
font_02_sfnt_off0000fc54.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC54 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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