Malicious PDF — malware analysis report

Static analysis result for SHA-256 352be650fe2613a1…

MALICIOUS

PDF

72.7 KB Created: 2021-03-06 18:45:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 8fc27d82b73394a18e6a99202052ec9a SHA-1: 94a051ccb5b4e49fc55db2d3d18ac6b3d49618b7 SHA-256: 352be650fe2613a1fe5bc61f9cfc983abbbae3bac9fc94ff9f6f43769cca575a
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://seumenha.ru/award?keyword=chronicles+of+narnia+chronological+order+movie PDF link annotation
    • https://cdn.sqhk.co/razanifuwuz/cgijbjb/suxofurobizomun.pdfIn PDF document text
    • https://gubagomokugexat.weebly.com/uploads/1/3/3/9/133988684/kolefukuza-raburizison-zofirufimewukoj-vuzoboxewivubur.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366014/normal_5ffde127a2429.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381104/normal_6030d925b6f8d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366343/normal_603182e41ccb7.pdfIn PDF document text
    • https://cdn.sqhk.co/zolilobup/ijYijhi/xobipuwonowogomugu.pdfIn PDF document text
    • https://cdn.sqhk.co/rifibimilo/jgYRgdf/33051145194.pdfIn PDF document text
    • https://pesopipuni.weebly.com/uploads/1/3/2/3/132303043/685971.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414682/normal_600eedadc2eec.pdfIn PDF document text
    • https://cdn.sqhk.co/porosobof/jeIgcSp/49410224521.pdfIn 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/d6004815-c41f-4d76-b2cf-a555ae6e05b5/used_honda_em6500sx_generator_for_sale.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/30f5d857-7143-48d2-a013-9641d4f28b9a/compound_shapes_rectangles_worksheet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1137b7af-4141-4c0c-a4cc-cfd5252158ee/zuwifimazenesuj.pdfIn PDF document text
    • https://s3.amazonaws.com/nemafu/balancing_equations_independent_practice_worksheet_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/41f3fc8b-68e4-46b2-a2a4-e4f6c405c3d7/nanda_nursing_diagnosis_care_plans.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0ee1d31f-a117-455f-8700-cfea0f13ddaf/4331236905.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b08dae67-7ab7-4e6e-9694-77793ca4682b/bojedekiwemubuz.pdfIn PDF document text
    • https://s3.amazonaws.com/dedinavesute/ccna_routing_and_switching_short_notes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/54e958ed-802e-4041-84a9-ffd5fa74d819/18410614100.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/38dda117-7e4c-47c8-9bbd-361e634aaa56/can_a_window_unit_be_used_as_a_heater.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6a1894c4-d52c-4851-ace1-02cb39f43094/stephen_hawking_books_list_wiki.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_off0000e130.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE130 5400 bytes
SHA-256: 239cd0458ec5df2723f293d4d5a7f39d74a48b01b59e1adc5ce502ee575e7bee
font_01_sfnt_off0000f365.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF365 9880 bytes
SHA-256: 1761ae728f8fbb5ce141dffa0ae01f474c6b4cfe16a93d3262ce5a5d726692ce

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