Malicious PDF — malware analysis report

Static analysis result for SHA-256 7966bd797f64f2ca…

MALICIOUS

PDF

44.7 KB Created: 2020-10-17 03:26:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: b5b442218786d2625c9845b96affabab SHA-1: 7d1fab4d20cabdf3c86bf5977cb37bd936a7f980 SHA-256: 7966bd797f64f2ca27f51c29884ce63cf96e1f2cbccda0c61b12a6128931205a
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://gettraff.ru/123?keyword=far+cry+2+android+download In PDF document text
    • https://bigogewoxof.weebly.com/uploads/1/3/0/7/130739615/kijidojezef-vamubisuriveb.pdfIn PDF document text
    • https://jatorogerujew.weebly.com/uploads/1/3/2/7/132710569/rebodi.pdfIn PDF document text
    • https://kidunaxu.weebly.com/uploads/1/3/1/4/131437100/sozenogilubop.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365627/normal_5f8757c02b8c3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366360/normal_5f871636231c6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367961/normal_5f8784d05b679.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365583/normal_5f87c8cc55de4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372960/normal_5f88a7b0b17b4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366980/normal_5f894d49a8510.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365525/normal_5f878b9a4f4c7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372087/normal_5f88bcd351546.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365541/normal_5f8715dcd9c50.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/1/0492/2294/2871/files/translations_and_reflections_worksheet_kuta.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5417/7185/files/pegarovopovanemo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5417/7185/files/group_verbs_list_with_bangla_meaning.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/9711/0701/files/28198193025.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5385/9494/files/80990611634.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0477/6479/9644/files/46709774257.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/1070/6619/files/wobagipizavavorofipopava.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0493/2186/9471/files/72589928535.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0476/7481/8726/files/hypersonic_glide_vehicle.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3224/7445/files/dutoxa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/9872/1442/files/jedageza.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/1448/7716/files/queue_data_structure_in_c.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_off000070ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x70AE 5036 bytes
SHA-256: fa70148645ad35b88a1354dc387a3afa0101c5769761d6583a41349dd5599593
font_01_sfnt_off000081f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x81F6 10244 bytes
SHA-256: c47be6a133c9e7744616398681794589f34b794157fe40e0b63810bf022e3f54

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