Malicious PDF — malware analysis report

Static analysis result for SHA-256 d30da82c7f853ec3…

MALICIOUS

PDF

37.0 KB Created: 2020-11-03 20:24:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-03-01
MD5: 137b98271e38a0f0724d4955df24a4f0 SHA-1: 44dec9e7505d8c6c5e1683dcdce482f225c56bd8 SHA-256: d30da82c7f853ec395eb9341fa2b82afaed6d696eac9ee5539a0a8e50ad9ed64
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=ymca+flowood+pool+hours In PDF document text
    • https://cdn-cms.f-static.net/uploads/4383698/normal_5f9fc2413eadb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368226/normal_5f9d11cd419e4.pdfIn PDF document text
    • https://jomitapekox.weebly.com/uploads/1/3/4/3/134319499/pusifavotukivod.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420031/normal_5f9682abafacf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390373/normal_5f947b72bb59e.pdfIn PDF document text
    • https://titamifafipife.weebly.com/uploads/1/3/4/3/134315234/kiwemas.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/0617908d-36f3-448f-a2c3-bd7e3531d7b4/60379681537.pdfIn PDF document text
    • https://s3.amazonaws.com/zuxadol/97765047487.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/8638/7644/files/fraction_study_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/kovilowab/kofosagap.pdfIn PDF document text
    • https://s3.amazonaws.com/fujadabez/viradufegijeme.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_off0000501a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x501A 5448 bytes
SHA-256: de272c467ad1fec95607b8fa8868208f39199ecab0f6699cb87eea5e44cfc92b
font_01_sfnt_off0000628b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x628B 10868 bytes
SHA-256: 684a5a3271ad14f0f83efa64faf61caa7b564d5fcd92b87d0ff3a6752decd7f3

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