Malicious PDF — malware analysis report

Static analysis result for SHA-256 b0a7c9a9e3915b9c…

MALICIOUS

PDF

39.0 KB Created: 2020-10-30 02:45:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-02-23
MD5: 013601b544120663cdf7a4e5e5e6b256 SHA-1: 524f47acf23cabd2fb3c11d3633f0e39d584652a SHA-256: b0a7c9a9e3915b9c9bef25bbc44e2c5a225bd536da9835318a7c5513e8bf72c8
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://ttraff.me/123?keyword=city+of+suffolk+va+jobs In PDF document text
    • https://funebaxap.weebly.com/uploads/1/3/4/3/134399245/wavetevaremabozo.pdfIn PDF document text
    • https://bipikive.weebly.com/uploads/1/3/4/3/134342269/zidelopeni.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383807/normal_5f8cba2f8dfc1.pdfIn 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/b02644f7-00f1-4471-8680-5e1a8b764d8b/kowuzinuvuduzabize.pdfIn PDF document text
    • https://s3.amazonaws.com/gopuze/boston_market_chicken_pot_pie_sodium_content.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0503/3495/7762/files/tagivemiwatodifawiwitu.pdfIn PDF document text
    • https://s3.amazonaws.com/pujinit/balun_canan.pdfIn PDF document text
    • https://s3.amazonaws.com/lorifumofelu/que_es_una_bacteria_baar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/3218/9379/files/paxudezipurotelebal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/3861/1355/files/download_mortal_kombat_x_mod_apk_adreno.pdfIn PDF document text
    • https://s3.amazonaws.com/susopuzupure/odisha_assembly_election_2019_date.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/114b37f8-e51c-41e0-a525-fc6d9343ee96/sesazoz.pdfIn PDF document text
    • https://s3.amazonaws.com/bevarolimesale/2015_ap_calculus_ab_practice_exam.pdfIn PDF document text
    • https://s3.amazonaws.com/zuxadol/defipeza.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0465/3989/9039/files/buveromimodo.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_off00005b36.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5B36 5012 bytes
SHA-256: f6f97fff03fd781905578b554fcc051fe0b8f1730ee875d2318c5c33055fc911
font_01_sfnt_off00006c70.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C70 10272 bytes
SHA-256: c16e61f83a0089e4d17dee762ec5fea15c89fa9d9ce9a13cab992292b0b7dd6f