Malicious PDF — malware analysis report

Static analysis result for SHA-256 a6c66d19c8718060…

MALICIOUS

PDF

49.8 KB Created: 2020-11-02 17:55:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: e40213c8f82311d074352de23a6193d0 SHA-1: c94e0734c2a65ed2a556cec5fe495f7ced8498b2 SHA-256: a6c66d19c87180609e4301ef3cda7598de8dfae242a52d62d605dc931e3420d0
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://ggtraff.ru/aws?keyword=install+dios+mios+wii In PDF document text
    • https://dumuwikodopod.weebly.com/uploads/1/3/4/4/134458554/3106794.pdfIn PDF document text
    • https://vidigesiwixir.weebly.com/uploads/1/3/3/9/133997627/4734405.pdfIn PDF document text
    • https://gejosabuvin.weebly.com/uploads/1/3/4/4/134457948/dusivibujo-nemotesizodeje.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366622/normal_5f875eefba817.pdfIn PDF document text
    • http://www.opentle.orgIn 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/e09188a9-5149-470d-8e61-0c7a92dc40d7/loleba.pdfIn PDF document text
    • https://s3.amazonaws.com/felasorarabipis/67497011147.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/95b093b7-58e0-4b97-bc33-841560716432/sarazokogofupikigiwujen.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/8776/3885/files/farming_simulator_19_apk_award.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1918f0e7-979d-47b4-93ce-827e8b4a714e/19492126958.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0700/8168/files/master_service_agreement_template_consulting.pdfIn PDF document text
    • https://s3.amazonaws.com/dudigonifu/72808537144.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e28dca74-2a1b-411c-9b1b-0a3575dfbac5/23286427852.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/47f70682-3dae-4a88-88ca-1eeaf8236d96/work_experience_certificate_sample_in_word_format.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://www.gnu.org/licenses/gpl.htmlIn 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00006d05.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x6D05 14696 bytes
SHA-256: a217ecf19fe9e2e02b6e218977d01906fdd41b0f247419b5c29d17c6167d664d
font_00_sfnt_off00005c65.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C65 4904 bytes
SHA-256: 77500d790fc3f97f935bbd408a0b941b7359580994dfbda9030e7f3484a3cffb
font_02_sfnt_off0000950c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x950C 11160 bytes
SHA-256: 95f257945c23b7685ebd5609029e17dbfc531b587f2b629e69b01ae6dbf3acc4

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