Malicious PDF — malware analysis report

Static analysis result for SHA-256 380baac3ac6d9383…

MALICIOUS

PDF

43.0 KB Created: 2020-11-03 01:10:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 88d8fa90925194b4aa7412a6924699c2 SHA-1: 8b8c029dae0296e013151a94b13e386660fedfac SHA-256: 380baac3ac6d9383049c0e979b190b464fb99751f5ece1106401896df14a7f56
194 Risk Score

Malware Insights

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

The PDF contains multiple heuristics indicating it is a malicious redirector, specifically designed to lure users to external sites. The embedded URL 'https://ttraff.me/123?keyword=the+best+christmas+pageant+ever+book+pdf' is identified as a malicious redirector. Additionally, the PDF includes a link farm with numerous external PDF links, one of which points to 'https://uploads.strikinglycdn.com/files/99d6031d-86be-426c-ad85-362e03b8e4d3/samsung_bypass_apk_7.0_download.pdf', suggesting a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://ttraff.me/123?keyword=the+best+christmas+pageant+ever+book+pdf In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/99d6031d-86be-426c-ad85-362e03b8e4d3/samsung_bypass_apk_7.0_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aeace3ac-b2bf-40c9-9c74-799feef93efe/28665598059.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ee68e609-feeb-4052-b065-26a8689b0d5a/jixokovepineruvomikiduje.pdfIn PDF document text
    • https://s3.amazonaws.com/susopuzupure/ximibamerad.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4af740d0-e8d4-4001-aad2-0a641d01dccc/toxiwudinejuzazekusavalu.pdfIn PDF document text
    • https://s3.amazonaws.com/lupuvogotog/logitech_mx_sound.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d7d3e29b-0bc5-4141-ac8c-921a17349c2b/tupebixevalumuwalukenew.pdfIn PDF document text
    • https://s3.amazonaws.com/ratixifo/performance_appraisal_comments.pdfIn PDF document text
    • https://s3.amazonaws.com/baxunaf/autodwg_to_dwg_converter_2015_crack.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aad4ee0e-32da-4d34-a45e-b0f3a47056c7/penta_career_center_ged.pdfIn PDF document text
    • https://s3.amazonaws.com/vuzufexarevima/50866657362.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/0653/2033/files/cave_run_lake_camping_zilpo.pdfIn PDF document text
    • https://s3.amazonaws.com/jolituzoji/canon_eos_2000d_specifications.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dbb35de3-b61f-4723-8b1c-174f0b6398a7/spygate_the_untold_story.pdfIn PDF document text
    • https://s3.amazonaws.com/levovod/mapamundi_con_nombres_hd.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_off000067e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x67E7 5748 bytes
SHA-256: faf65eaf49c2f0e94b7ba9432486c2125c10bf3e406e5009567ef89a202b1167
font_01_sfnt_off00007b4c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B4C 10284 bytes
SHA-256: d80f1b160a3e4fc9d2732a736826e71834d6c9f0b561a08b0202b4fb7773fe85