Malicious PDF — malware analysis report

Static analysis result for SHA-256 dc1d550325b0d154…

MALICIOUS

PDF

35.0 KB Created: 2020-10-30 00:07:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 99c3290cf392a578fd517f19f7e86dca SHA-1: 280b923265fbc7e702815d9b6bdc380b4f414cc4 SHA-256: dc1d550325b0d154908e830c7e728e2db0de198debe642872d30f087ca4a1b70
94 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 routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.
  • 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://ggtraff.ru/strik?keyword=bingo+bash+free+chips In PDF document text
    • https://kaxokotul.weebly.com/uploads/1/3/4/3/134380066/fusulemaro.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0507/4364/0255/files/discord_notification_meme.pdfIn PDF document text
    • https://s3.amazonaws.com/bajapovogam/besitivota.pdfIn PDF document text
    • https://s3.amazonaws.com/wukara/93710220246.pdfIn PDF document text
    • https://s3.amazonaws.com/jamokaroxoj/jquery_ajax_download_from_server.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/3996/3325/files/certificat_de_non_gage_moto.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/1579/8421/files/ikea_minde_mirror.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/9300/6771/files/classic_by_craig_am_fm_turntable.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/3656/4375/files/australian_open_2020_mens_draw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0491/8309/6998/files/32155989152.pdfIn PDF document text
    • https://s3.amazonaws.com/bokexizometun/anastasia_broadway_musical_script.pdfIn PDF document text
    • https://s3.amazonaws.com/farezelof/wavumizesiledabarexozogob.pdfIn PDF document text
    • https://s3.amazonaws.com/viboxikuz/the_daniel_plan.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_off00004b93.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4B93 5432 bytes
SHA-256: b20713fd193389d26907e5dc6a54e14eaf69c4b99899034fa145f98d3746c714
font_01_sfnt_off00005e12.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E12 10096 bytes
SHA-256: 08c5ea68ae8672058921180f62cfce1bd0ec8d88972ea90c2b84f553258258da