Malicious PDF — malware analysis report

Static analysis result for SHA-256 c1efc33f980acf92…

MALICIOUS

PDF

36.4 KB Created: 2020-10-18 13:44:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 889508b187ca747f03221cac26668c09 SHA-1: 7ccb5b6c599c476ecc5d6d8b6540840170f5bb4e SHA-256: c1efc33f980acf92e6a0917a9d9c76da9509ef94bdc5d964c5819f987448a189
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/123?keyword=la+familia+de+pascual+duarte+pdf+austral In PDF document text
    • https://gonerogad.weebly.com/uploads/1/3/1/4/131438616/taximuvuxo_xobeze.pdfIn PDF document text
    • https://tipefejiri.weebly.com/uploads/1/3/0/9/130969755/1918381.pdfIn PDF document text
    • https://zuragani.weebly.com/uploads/1/3/1/4/131438510/140639d32d45da.pdfIn PDF document text
    • https://porelananov.weebly.com/uploads/1/3/0/7/130775759/3113240.pdfIn PDF document text
    • https://kusebedanosude.weebly.com/uploads/1/3/1/1/131163667/mupogeni.pdfIn PDF document text
    • https://keniwuki.weebly.com/uploads/1/3/1/4/131483234/3cb113af6.pdfIn PDF document text
    • https://viweposedijul.weebly.com/uploads/1/3/1/0/131070314/6323409.pdfIn PDF document text
    • https://kupugaxome.weebly.com/uploads/1/3/0/9/130969415/502b7b4a3022.pdfIn PDF document text
    • https://babikovinemixe.weebly.com/uploads/1/3/1/8/131856339/8543106.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374545/normal_5f89778859aa9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369645/normal_5f886d26629a7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369768/normal_5f8a17da2d5fa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366377/normal_5f88f6f036cf2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369663/normal_5f8bcd3623d69.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/1/0484/4909/3797/files/palabras_de_agradecimiento_a_una_amiga.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9074/6271/files/expanded_form_math_worksheets_4th_grade.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4953/9989/files/48706724751.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/3325/0970/files/20202079933.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c2c7f689-48f4-4869-975f-67343777f1ce/62503186226.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/03b629b5-59d9-40e5-bd75-21d32a21cf79/91161345968.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/68354045-286a-4658-8f95-ac064d0ccb58/92212767074.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004e17.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4E17 5240 bytes
SHA-256: 297acee0ea347b6993612ff7a488529e4a13d110c644dd857ba063b82a8d06f4
font_01_sfnt_off00005fcf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FCF 10612 bytes
SHA-256: d481c90d317912487fa590f2879ee21edb9285ea88666596e5d45424a2c2d25b

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