Malicious PDF — malware analysis report

Static analysis result for SHA-256 e0848d14a0346640…

MALICIOUS

PDF

43.7 KB Created: 2020-10-28 17:04:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-02-23
MD5: 6a43fd4a63b319a62357d9538e04b541 SHA-1: e94b994ba14f88716486349ced206a4a256183a9 SHA-256: e0848d14a0346640cb0f3ec0d3acc785317c408ae835cf5da64a6c31d04b3f75
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.cc/123?keyword=sims+3+alien+mod In PDF document text
    • https://cdn-cms.f-static.net/uploads/4386084/normal_5f8cbb9ce2915.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403563/normal_5f97147c662b0.pdfIn PDF document text
    • https://tuvozejuwubox.weebly.com/uploads/1/3/4/3/134323710/nirusofuxopisaju.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383792/normal_5f8f52d2da711.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368224/normal_5f87cc36a9fa5.pdfIn PDF document text
    • https://radutarogo.weebly.com/uploads/1/3/4/3/134379411/wubevotawikiku.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372972/normal_5f997554b6752.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/3b3046de-b713-4e02-ad13-b57f08c9b565/7997310268.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/db038c0c-bbb6-4a4e-8ffb-468ecd3a31e1/gosibip.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c73c180e-c0d7-4361-ba4b-6e0cf9a2be50/tovixipupeja.pdfIn PDF document text
    • https://s3.amazonaws.com/vuliwisuwig/82041229409.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/6137/3847/files/stanford_pa_program_reddit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0268/7834/5387/files/79477697594.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/4979/3698/files/paxakesefusiwel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4970/5881/files/batirefixalo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d0cd874b-08e9-442c-b8dd-f57bd4566b0b/kipigogamuvoxigatolam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/0432/4772/files/proraso_shaving_soap_in_a_bowl.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/8009/6160/files/articles_worksheet_with_answers_for_grade_6.pdfIn PDF document text
    • https://s3.amazonaws.com/dorobukasawituw/kewaxi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/4012/6629/files/85657180169.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_off00006cb0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6CB0 5144 bytes
SHA-256: e118ad9949ba966ae8807ad862f47389684a317ae0fd5f79774260ab798b3ba7
font_01_sfnt_off00007e15.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E15 10592 bytes
SHA-256: b88f9657b03abce56df97e508dc7cc30d40c7c8c7535120627cb4c37572fbc04

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