Malicious PDF — malware analysis report

Static analysis result for SHA-256 0cad1f7c344d40c8…

MALICIOUS

PDF

56.8 KB Created: 2020-10-20 18:35:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: ef8160a1756dce68241916485bfd3f77 SHA-1: f73fe5a901d3437da79d95f247028382fde38998 SHA-256: 0cad1f7c344d40c8b37bd568aaea7a2b3f9105a85ac353c1c9ee55e752866a16
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://gettraff.ru/strik?keyword=el+arte+de+la+seduccion+resumen In PDF document text
    • https://cdn-cms.f-static.net/uploads/4371786/normal_5f896fa7b39d8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365583/normal_5f8ce673622f8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365652/normal_5f86f91d1d457.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379839/normal_5f8db1dfdf9d1.pdfIn PDF document text
    • https://narogigadi.weebly.com/uploads/1/3/0/8/130874066/4153850.pdfIn PDF document text
    • https://jobubati.weebly.com/uploads/1/3/1/4/131453688/3770832.pdfIn PDF document text
    • https://riwisasivituw.weebly.com/uploads/1/3/1/0/131070703/3503281.pdfIn PDF document text
    • https://saxibodusazo.weebly.com/uploads/1/3/0/7/130740440/070a588.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366987/normal_5f87344b7e292.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370068/normal_5f890287aef25.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365627/normal_5f88b15c298d7.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/1/0488/4080/2469/files/altivar_31_inverter_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/9196/7143/files/35472587657.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/5940/7765/files/programming_collective_intelligence_latest_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5759/1960/files/70026851135.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/8304/5293/files/i_am_paul_walker_tv_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/wilugugo/jenatuzonizatazavadefaw.pdfIn PDF document text
    • https://s3.amazonaws.com/memul/11225243663.pdfIn PDF document text
    • https://s3.amazonaws.com/wilugugo/2829321469.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_off000090cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x90CF 4924 bytes
SHA-256: 0501e34d14b2d6cb8247f6f7540ba14927144f95a988910efd490d69d1de5de9
font_01_sfnt_off0000a16b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA16B 11192 bytes
SHA-256: 65ba788186d61ff2c782e1f70fc42fe3f602bac61d1d43421e64683715c4bf93
font_02_sfnt_off0000c60d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC60D 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c