Malicious PDF — malware analysis report

Static analysis result for SHA-256 bb0a83d919d7967a…

MALICIOUS

PDF

50.3 KB Created: 2020-10-26 13:27:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: e25b0a3eea4c37068ba7f9fc5359406d SHA-1: 72f3c53e5c6a623b8829cba817f08cb910cd73d8 SHA-256: bb0a83d919d7967a7e5c64fe6832a87d78177bbbfb305568fd6091951cf3d753
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a deceptive title and numerous embedded links, with one specifically pointing to a known malicious redirector. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK confirms that the link at https://ggtraff.ru/aws?keyword=waves+physics+pdf+download is associated with malicious infrastructure. The PDF_SEO_LINK_FARM heuristic indicates a large number of external links, suggesting an attempt to distribute malicious content or engage in SEO manipulation for malicious purposes.

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://ggtraff.ru/aws?keyword=waves+physics+pdf+download In PDF document text
    • https://cdn-cms.f-static.net/uploads/4382201/normal_5f91fb0be38b6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387713/normal_5f96981bda752.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366057/normal_5f8747d07fe23.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365598/normal_5f95e80331922.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375884/normal_5f89a703c679d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379222/normal_5f95981ebf02d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371023/normal_5f8a14f970379.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368985/normal_5f889c652cbab.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369935/normal_5f92ff8aa1864.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387419/normal_5f8d212d41d80.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/8e43ea1b-a9fa-4dee-8482-c63c2530b014/33996759576.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/018cc740-a45a-42ee-8fb4-d4cc16fb6b2b/fowasisedibu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/44a5f89a-c742-4687-8433-bfb0acb38c9d/40755739556.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b2336d04-13fd-4d1e-879d-036fd2607b68/zarixufewotokil.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c8b4c0e6-a2fc-46aa-82ca-62f01018df3a/4097120007.pdfIn PDF document text
    • https://s3.amazonaws.com/saziwijaxodav/newisul.pdfIn PDF document text
    • https://s3.amazonaws.com/gedimuta/28746956655.pdfIn PDF document text
    • https://s3.amazonaws.com/tetazino/55647566537.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/4841/7442/files/barcelona_travel_map.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0219/1269/files/rumifujuzifugejunome.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5592/2852/files/lisup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/9087/7845/files/an_economic_history_of_twentieth-century_latin_america.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_off000083b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83B8 5412 bytes
SHA-256: afac85c8ccb49251d21269a207348357e82143d42617a441812e02aee2ebba9c
font_01_sfnt_off00009642.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9642 11020 bytes
SHA-256: 73ec992d5eb70858dd015a2bb5d27ab0d75f91fed588a4d67d1decd09e4ef4dc

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