Malicious PDF — malware analysis report

Static analysis result for SHA-256 6d9047bc2142d5d3…

MALICIOUS

PDF

41.5 KB Created: 2020-11-08 01:12:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: ee23c4152e3d10f890260f8e019b5084 SHA-1: 97808e9baadc9200d3ab1c649770b6e560d6d260 SHA-256: 6d9047bc2142d5d3272deec1add8287d25e48f712a49e0a502d0bd114b74666e
134 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.
  • 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://traffmen.ru/123?keyword=noun+in+spanish+translation In PDF document text
    • https://cdn-cms.f-static.net/uploads/4384310/normal_5f8cec74f3a80.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379726/normal_5f9b5a3c4d276.pdfIn PDF document text
    • https://wipezupogev.weebly.com/uploads/1/3/4/3/134307181/6497286.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404750/normal_5f9fcb89c7536.pdfIn PDF document text
    • https://fanawilixu.weebly.com/uploads/1/3/1/4/131408209/wamepotibefunozori.pdfIn PDF document text
    • https://rulomegujenuguv.weebly.com/uploads/1/3/4/3/134329868/8d5dd223b8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379614/normal_5f903c79692d7.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/liluvad/51056934209.pdfIn PDF document text
    • https://lelijowig.files.wordpress.com/2020/11/asterix_y_los_pictos_gratis.pdfIn PDF document text
    • https://s3.amazonaws.com/gurowozenupifi/la_bella_bestia_gratis.pdfIn PDF document text
    • https://s3.amazonaws.com/defujo/47440024326.pdfIn PDF document text
    • https://s3.amazonaws.com/tuzakifezara/41919286751.pdfIn PDF document text
    • https://s3.amazonaws.com/rizezobabub/assembling_california_john_mcphee.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_off00006557.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6557 4876 bytes
SHA-256: 9c7037d9fefb3654a5be507db05c0a05396e92e661228c2c751c79dd3321e395
font_01_sfnt_off000075e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x75E6 10532 bytes
SHA-256: 729c6a365a608324ee2f463875953817b4aec270635c3f224959a3811c9fba53