Malicious PDF — malware analysis report

Static analysis result for SHA-256 078c85745d0a5906…

MALICIOUS

PDF

45.2 KB Created: 2020-11-01 23:58:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-02-23
MD5: ea4592135064f9d1b2a52e059031174a SHA-1: d4110ec00effff75317bbc87db0546363afe3573 SHA-256: 078c85745d0a590686e6850b02f303c5bdc0216d540458c3fd8268de00937d63
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=free+unblocked+solitaire+card+games In PDF document text
    • https://tozowibalap.weebly.com/uploads/1/3/4/3/134383498/3392694.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379744/normal_5f8d61a0524ad.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375522/normal_5f894eb16581f.pdfIn PDF document text
    • https://fepaxumezo.weebly.com/uploads/1/3/4/3/134320712/3bc6f8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375071/normal_5f9606612dcb5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373788/normal_5f9a72c5e79b7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369138/normal_5f8a782816dab.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370768/normal_5f889c5d757f2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450043/normal_5f9e3410f0583.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/1/0500/6671/8906/files/29419019191.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fd213d8b-8b7d-4abb-9324-b1ac9072becf/55995212749.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/3768/6421/files/wipusosaxisa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/93ed33d4-6f89-4323-96b6-78ac5f054584/9172130189.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/9472/7584/files/94748355240.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/2779/0496/files/ms8301a_digital_multimeter_manual.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_off00007132.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7132 5420 bytes
SHA-256: 442f110a2e4635439893520ca3fb0eb164dca0999ac451a313853b4c3c5824d8
font_01_sfnt_off0000838a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x838A 10768 bytes
SHA-256: a9e19b1b0a60e00719616ac0ec140ca3012c0f9bac1544ea440040e5e8b6862f