Malicious PDF — malware analysis report

Static analysis result for SHA-256 fa62b9b4670687d8…

MALICIOUS

PDF

46.5 KB Created: 2020-10-07 23:05:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: f6e1df8ef332e859c5b67e93b41836e1 SHA-1: 94fe793c6c9504d35defd2f767208232b6c8e2c6 SHA-256: fa62b9b4670687d8c2938ccf3c4ab784444a0b88d1572d69f9ff616bf38893c4
184 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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/strik?keyword=scorpion+mp3+free+download In PDF document text
    • http://files.positionlessbball.com/uploads/1/3/1/4/131454114/6020483.pdfIn PDF document text
    • http://files.bathnbloom.com/uploads/1/3/1/4/131453214/sezanizitili_bumubip.pdfIn PDF document text
    • http://fasugepur.thefutureofdemocracy.net/uploads/1/3/0/7/130740592/newozosar.pdfIn PDF document text
    • http://files.avoncommunityheritagefestival.org/uploads/1/3/2/6/132681392/pirasokojisa-xigekom.pdfIn PDF document text
    • http://files.redesignbyblaser.com/uploads/1/3/0/7/130775174/farujotivibap.pdfIn PDF document text
    • https://site-1037156.mozfiles.com/files/1037156/14874937820.pdfIn PDF document text
    • https://site-1042347.mozfiles.com/files/1042347/zozijafedesosiluzobeganul.pdfIn PDF document text
    • https://site-1039612.mozfiles.com/files/1039612/66843637173.pdfIn PDF document text
    • https://site-1036885.mozfiles.com/files/1036885/gejitoj.pdfIn PDF document text
    • https://site-1043885.mozfiles.com/files/1043885/pijisokiw.pdfIn PDF document text
    • http://fontawesome.iohttp://fontawesome.io/license/In 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/a67c86b7-946a-4d41-b299-ceab2e0d1572/xixakiwarimimapalelixil.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f8a7efc6-1cfa-4e79-98eb-b8fda3f36013/1143368502.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3d7af705-97ec-4bfc-8f68-5358656ff620/99605904192.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/63088b0b-af22-431f-81d7-89099576d730/gufaz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/80b5201e-e521-4239-8d9e-34e51428cbb9/nexijoxagezibeboramib.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/7524/2650/files/plex_pass_free_apk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/2792/5661/files/will_leather_goods_sale.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2406/3392/files/bufose.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8619/8424/files/solofik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6794/6648/files/teacup_maltese_for_sale_houston.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000686d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x686D 3036 bytes
SHA-256: aa5372358103b7cc4ef908374b598f052ee1396b52dcf70fa50afca2ab89f292
font_01_sfnt_off0000757f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x757F 5484 bytes
SHA-256: 698bd71edb80d2aba97f95a9fbd4c5e310e74da9746f58f094f1abc924ebf639
font_02_sfnt_off00008826.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8826 10652 bytes
SHA-256: 7d05a89f5c2817eadcfd39b80418aa95192027964437035d1c319dd17b45e2c8

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