Malicious PDF — malware analysis report

Static analysis result for SHA-256 8a85031fa855edfe…

MALICIOUS

PDF

53.0 KB Created: 2020-11-07 01:24:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 54a70ef3bd2123b97f1d8c5a83fd1cee SHA-1: 20d86672c94df7900148b4198cd967b849ce2d91 SHA-256: 8a85031fa855edfe9c34259caa6ebff1ab687ae96b2b475aa20e111fe33c722e
96 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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://traffset.ru/aws?keyword=manual+jbl+charge+3 PDF link annotation
    • https://mazazogadof.weebly.com/uploads/1/3/4/3/134374066/xasotufetekokimevoxi.pdfIn PDF document text
    • https://mefevujeloz.weebly.com/uploads/1/3/4/3/134317202/0fbae57dcff7c2.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/xajowu/puniwikadenik.pdfIn PDF document text
    • https://danuxowifoka.files.wordpress.com/2020/11/how_to_save_a_life_piano_sheet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/memul/gixesa.pdfIn PDF document text
    • https://s3.amazonaws.com/viromibukoleliw/cs_251_uic_spring_2019.pdfIn PDF document text
    • https://totarex.files.wordpress.com/2020/11/nuzelubomezeresuzo.pdfIn PDF document text
    • https://pixetimel.files.wordpress.com/2020/11/zozeni.pdfIn PDF document text
    • https://zugibiraw.files.wordpress.com/2020/11/gumaw.pdfIn PDF document text
    • https://s3.amazonaws.com/juxatop/nofobifizefuge.pdfIn PDF document text
    • https://s3.amazonaws.com/vukusa/fexeradozajezizatoge.pdfIn PDF document text
    • https://s3.amazonaws.com/xuzed/kesufixipixozenomapereta.pdfIn PDF document text
    • https://dilopipo.files.wordpress.com/2020/11/demetivudaxakoleze.pdfIn PDF document text
    • https://lusabun.files.wordpress.com/2020/11/rashtrapati_bhavan_architecture.pdfIn PDF document text
    • https://s3.amazonaws.com/jamokaroxoj/medejepe.pdfIn PDF document text
    • https://danusodemoza.files.wordpress.com/2020/11/sulifedawoz.pdfIn PDF document text
    • https://dogisur.files.wordpress.com/2020/11/vazumiteje.pdfIn PDF document text
    • https://gibalon.files.wordpress.com/2020/11/lofejifif.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_off00006cef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6CEF 4912 bytes
SHA-256: 991499e1077877fdaa7f8e6726b1e6793a8d51f87f52bf285ae174844947db3b
font_01_sfnt_off00007d9e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D9E 10960 bytes
SHA-256: 5970d3a26711c1aa19159a82027540af8dab70975d432a70be95076e15e9428b
font_02_sfnt_off0000a1ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA1AC 16140 bytes
SHA-256: 2732c78df68b4531e26da51a256f0f9ab881cb8a96d1886ade34872d88eeece3
font_03_sfnt_off0000b6a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB6A9 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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