Malicious PDF — malware analysis report

Static analysis result for SHA-256 79315ff974590a78…

MALICIOUS

PDF

62.0 KB Created: 2020-10-27 09:04:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: c91a32ea2e52ee7cf90bed8e7d1a7e0a SHA-1: 51748423f57a2573381e04aff120e2f49e3ecd94 SHA-256: 79315ff974590a78ab7b46d50e985caf0d85989b3cb3f75e52bb2d4efd4e90a4
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.club/123?keyword=chowan+middle+school+nc In PDF document text
    • https://raxuzorufureraw.weebly.com/uploads/1/3/0/7/130775378/2ef217b.pdfIn PDF document text
    • https://siregudak.weebly.com/uploads/1/3/0/7/130738759/9c0541618c593b5.pdfIn PDF document text
    • https://xavujome.weebly.com/uploads/1/3/0/7/130739328/nuvotebanepezax.pdfIn PDF document text
    • https://xujaxivef.weebly.com/uploads/1/3/1/4/131438557/a17a2d5.pdfIn PDF document text
    • https://mepetimis.weebly.com/uploads/1/3/1/4/131483418/4868386.pdfIn PDF document text
    • https://nuxirudeduw.weebly.com/uploads/1/3/4/4/134442083/2898613.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/1/0435/3343/5029/files/37927890516.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0495/6310/7480/files/russia_revealed_study_guide_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/8837/0582/files/scratch_photo_app_android.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/7901/7649/files/articles_worksheet_3rd_grade.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/5916/2521/files/cancer_de_tiroides_anaplasico.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/5916/2521/files/agile_hardware_development.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/8837/0582/files/58146429203.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/9241/9757/files/wapomazuxujanas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/6991/3753/files/definicion_de_bosquejo_del_metodo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/0653/7111/files/chronic_idiopathic_constipation_guidelines.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2684/0738/files/piscatore_e_pusilleco_spartito.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0354/3715/files/jardineria_y_paisajismo.pdfIn PDF document text
    • https://s3.amazonaws.com/wonoti/9856360475.pdfIn PDF document text
    • https://s3.amazonaws.com/jivuxo/excel_function_list.pdfIn PDF document text
    • https://s3.amazonaws.com/bakoloj/nk_giri_automobile_mechanics.pdfIn PDF document text
    • https://s3.amazonaws.com/xanebavifamopez/32379936642.pdfIn PDF document text
    • https://s3.amazonaws.com/toguvaju/medical_laboratory_equipment_and_their_uses.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_off0000b30b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB30B 5080 bytes
SHA-256: d84e662a48121818be8d8e23f593c5c753de3e3574486376324c15ac7eeaf110
font_01_sfnt_off0000c431.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC431 11228 bytes
SHA-256: 0e92c953e69f8f04928e8207953d04a2f9dc59d990ee75e6971d4d9c589fda73

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