Malicious PDF — malware analysis report

Static analysis result for SHA-256 37b159e3ba1dbbb7…

MALICIOUS

PDF

49.8 KB Created: 2020-10-25 14:04:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-03-01
MD5: 010151c1ac73be963178727bbdac69ba SHA-1: 0d11fa0d9fea39a395aa46b37f940e0aea57167d SHA-256: 37b159e3ba1dbbb7d994d0ad74db2354eb991808a6a7c9f7f1ce2468b84c78cd
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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/pify?keyword=puffin+browser+pro+apk+download+for+android In PDF document text
    • https://fogajabewe.weebly.com/uploads/1/3/4/1/134131707/3991153.pdfIn PDF document text
    • https://wurikosaradusif.weebly.com/uploads/1/3/1/3/131384544/dotefajakisov.pdfIn PDF document text
    • https://devuzagobeli.weebly.com/uploads/1/3/4/4/134431767/8b92d.pdfIn PDF document text
    • https://wemugevesusufe.weebly.com/uploads/1/3/4/4/134467109/jesovusijerogegug.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0438/7835/1003/files/manual_steering_box_rebuild_service.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/9782/6503/files/newurureredej.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2889/8211/files/zemuposabazitugigatu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9097/5647/files/seacoast_air_conditioner.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0480/1475/3951/files/tejowezevasexijo.pdfIn PDF document text
    • https://s3.amazonaws.com/pazifetanegapu/employment_id_form.pdfIn PDF document text
    • https://s3.amazonaws.com/mijedusovineti/wawezotenax.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files2/sap_abap_tutorial_download.pdfIn PDF document text
    • https://s3.amazonaws.com/levovod/nelazegimamij.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/016ed51b-353a-45b2-9510-3b22253fb78d/automotive_technician_job_description.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/edf0ce1f-edeb-41ca-83e6-d265fb411da8/jolefukivixun.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/275f34d7-e1cc-4439-9ee1-7d5861a53ccd/gesudaliwemipusopik.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/09b38ab2-1827-40b8-8845-8f46d98a71fb/dragon_ball_super_yamoshi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0366f06d-2f3e-4d22-a02b-70ba534cdada/dafivurorakatet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/595a4e64-2e6c-4561-8b17-2b3193b1081b/sapevumabesuxuleraxagu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1e0b7fa0-ae81-4605-8532-14ef8a4ac124/92774624098.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000748b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x748B 5136 bytes
SHA-256: 1e4dbbd9a431b2e422ed1d4ca969a22dd7bd7289a28fd8959ede5fe3522e91a7
font_01_sfnt_off0000860a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x860A 10912 bytes
SHA-256: 05714807f6a815166e0cc4ab3de4e8215692ea5e441869087321ef9937a1df88
font_02_sfnt_off0000ab2a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAB2A 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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