Malicious PDF — malware analysis report

Static analysis result for SHA-256 8d085622807fdf1a…

MALICIOUS

PDF

85.0 KB Created: 2020-12-23 17:15:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 2ccd70e4e512920048e603fc767250c8 SHA-1: 55c2802c2ea548a7afa16a95619bca41e9bdec40 SHA-256: 8d085622807fdf1ab2cf113538e4d492038e4e5075c07429d7f183fe5ced8317
154 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to redirectors and link farms, indicating a phishing or malicious redirection attempt. The 'ML_NYX_PDF_MALICIOUS' heuristic and the presence of a known malicious redirector URL strongly suggest malicious intent. While no scripts were extracted, the PDF structure and embedded URLs are indicative of a spearphishing attachment designed to lead users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://gettraff.ru/strik?utm_term=successful+parenting+secrets+by+nwosu+friday In PDF document text
    • https://cdn.sqhk.co/wezopexa/Bkcnjik/abstract_id_card_template_vector_illustration.pdfIn PDF document text
    • https://cdn.sqhk.co/gibuzini/CsmX8he/optical_illusion_tattoo_on_head.pdfIn PDF document text
    • https://turetajonu.weebly.com/uploads/1/3/4/6/134629909/latibaxujawelan.pdfIn PDF document text
    • https://cdn.sqhk.co/xaderimi/jjgiZCC/shareit_apk_old_version_for_iphone.pdfIn PDF document text
    • https://cdn.sqhk.co/bitubebo/jeiI3ja/sustainable_operations_management_examples.pdfIn PDF document text
    • https://cdn.sqhk.co/pujunuzivas/RDukbfW/43082857315.pdfIn PDF document text
    • https://cdn.sqhk.co/nugutobudan/lTJjigh/semodepunivuxozoz.pdfIn PDF document text
    • https://cdn.sqhk.co/tuwagezo/EiaPMOk/joxutederirog.pdfIn PDF document text
    • https://fafofezun.weebly.com/uploads/1/3/4/3/134338513/nakipigakazus-xufozafi-gafigotuk-fuxojo.pdfIn PDF document text
    • http://fontawesome.iohttp://fontawesome.io/license/In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/bidurudilidujug/cath_kidston_pyjamas_size_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d114ea64-9047-44f1-a0f1-1877e753b01c/50021747944.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/57ec076e-0aa3-45be-bb70-39813a5e1e87/ruzoxipisedaruvuribev.pdfIn PDF document text
    • https://s3.amazonaws.com/pivetuzadujo/adigi_adagaleka_oka_maate_adagana_song.pdfIn PDF document text
    • https://s3.amazonaws.com/sebunuzu/ambaji_mataji_photos.pdfIn PDF document text
    • https://s3.amazonaws.com/fejenijovekozu/56957168277.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0016aecb-2121-433a-b634-d96765aba26e/31433399634.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/40647915-9d7a-4819-bcf0-23c9cea10471/ruvaxafezoninulapipiw.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_off000104ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x104CE 1880 bytes
SHA-256: bdb744d72980899a217ffa340247141da34a4c030cd1598858c502af37b033c1
font_01_sfnt_off00010dba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10DBA 5760 bytes
SHA-256: cd4012ec6222968b1d7c210b377cd13ddb73f4419ef6ffd310229e8eb9e1542d
font_02_sfnt_off00012177.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12177 10676 bytes
SHA-256: 1b3ba17438f6eb1616fe82ff4d758133b0b4b33b7f933af13d9b483a02f5750a

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