Malicious PDF — malware analysis report

Static analysis result for SHA-256 568c9f68065f82cb…

MALICIOUS

PDF

48.6 KB Created: 2020-10-29 01:59:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-20
MD5: 56a61024ea929f3bf878013d168652cd SHA-1: 7938a54dd61713434e85fae6bb8fe0a2207cb162 SHA-256: 568c9f68065f82cb85fc562e766e27b0090c264ae9d7213cabd16d0906f6249e
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links, many of which point to a redirector service known to host malicious content. The document body, though heavily obfuscated, contains URLs that are part of a link farm designed to manipulate search engine results. This suggests an attempt to drive traffic to malicious sites, likely for phishing or malware distribution.

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.
  • 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.
  • 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=arapahoe+high+school In PDF document text
    • https://cdn-cms.f-static.net/uploads/4365661/normal_5f87eb375166b.pdfIn PDF document text
    • https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/numubemezenoni_lexujifere.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410201/normal_5f93c4087b059.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381082/normal_5f8bbbb74d541.pdfIn PDF document text
    • https://vodexekuteb.weebly.com/uploads/1/3/0/7/130776001/766de00ff9765.pdfIn PDF document text
    • https://jawasolasazilem.weebly.com/uploads/1/3/1/3/131379174/beparinunij.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393349/normal_5f98609209fe2.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/1/0465/2040/2078/files/ac_blower_motor_capacitor.pdfIn PDF document text
    • https://s3.amazonaws.com/tadovu/26099555413.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/36aa3944-64f0-4305-97f6-a50fd06e6fae/2020_my_country_reset_game.pdfIn PDF document text
    • https://s3.amazonaws.com/luxelula/vizixasopebamopegiw.pdfIn PDF document text
    • https://s3.amazonaws.com/mavixu/emerson_nature_full_text.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4f3b3c04-0d8a-48b5-b17d-600007cabaaf/el_monje_que_vendio_su_ferrari.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9d464b70-be24-4254-9737-ad7d2bd306ac/rujupufowebejela.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e7fc6b16-e728-4a6f-b773-c4a32c9f72f1/28522905513.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d4a3c744-58f5-4deb-96bd-74ee81dd1603/marigotuzededuvorakogaxe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e25fc366-b3ae-4c4e-a639-b709ea5ee9ad/judopudatilotu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a4705136-cdbe-4e7d-8b44-8a5715e3a47c/the_cask_of_amontillado_ppt.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/0279/6442/files/bafege.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/05123a6e-ca08-407f-858d-f98b9c152d5d/kisibuvevukifinim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0978/5499/files/mugen_1.1_stages.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_off00007f5f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F5F 5184 bytes
SHA-256: 6f63c1f6a7a84b100c61bd1be4833651882ab016a1049b675723d9b35f64193f
font_01_sfnt_off000090ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x90FF 10760 bytes
SHA-256: cd4daa38c9d96cf83e66be2b064a4690443ea6d6a365bbc78fedb71541e1e572

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