Malicious PDF — malware analysis report

Static analysis result for SHA-256 e9875460185d9497…

MALICIOUS

PDF

46.3 KB Created: 2020-10-28 22:32:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 0c1d73337e1489acf77df0a8c978bb4b SHA-1: 98d689732976a9062863f02f4a03b9178f2f709a SHA-256: e9875460185d9497a9391fc67374a459bb319b62bd38eff52d6570dead58ff93
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous embedded links, with one specifically pointing to a known malicious redirector. The document body, though partially corrupted, includes the URL 'https://gettraff.ru/aws?keyword=pet+sematary+2+parents+guide', suggesting a lure for SEO manipulation and traffic redirection. The presence of many external PDF links further indicates a link farm strategy.

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/aws?keyword=pet+sematary+2+parents+guide In PDF document text
    • https://cdn-cms.f-static.net/uploads/4408186/normal_5f96c660e9a2f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366341/normal_5f872469eb7ec.pdfIn PDF document text
    • https://jomitapekox.weebly.com/uploads/1/3/4/3/134319499/482a948.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376625/normal_5f8c07cd37a41.pdfIn PDF document text
    • https://kikuriniwabutip.weebly.com/uploads/1/3/4/4/134440093/vufatesigefew.pdfIn PDF document text
    • https://mojivimimujovo.weebly.com/uploads/1/3/0/8/130874437/xefafimofaxeparekuji.pdfIn PDF document text
    • https://juporolo.weebly.com/uploads/1/3/1/3/131380745/6190186.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367268/normal_5f975ecf373b4.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/a09acab2-4771-4fcd-9d13-dc92f50a07c9/56057633132.pdfIn PDF document text
    • https://s3.amazonaws.com/sukedil/46689652252.pdfIn PDF document text
    • https://s3.amazonaws.com/fasanag/african_culture_and_civilization_a_textbook_for_ges_102.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/2891/3560/files/97215397208.pdfIn PDF document text
    • https://s3.amazonaws.com/jebupofedijakuk/cromatografia_de_adsoro.pdfIn PDF document text
    • https://s3.amazonaws.com/zifozujiwi/88760319022.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/8353/9644/files/generative_phonology_description_and_theory.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f123f772-a2f5-4924-9fc8-650fc096b1ed/rekinezizebe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f4cedf31-1473-4cdd-ac30-f09022c44c35/interpreting_text_and_visuals.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2cdc2902-9c71-4a86-b06a-ee81c93d7d4a/lovestruck_the_musical.pdfIn PDF document text
    • https://s3.amazonaws.com/bevekizadoxuj/26275528000.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files/45163223780.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/35d03e20-832a-4fdd-a288-db5175aa2296/wobikukezubufekizarezud.pdfIn PDF document text
    • https://s3.amazonaws.com/tetazino/kubarigosikib.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_off00007495.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7495 5480 bytes
SHA-256: 4ec9efb055dd67ef38af2e4815e3b76f4d33361d332e407cb7a82728909fd56d
font_01_sfnt_off0000872b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x872B 11208 bytes
SHA-256: 8a1c2517f8f82cf085999da7be0bf8104badac944590db5c4e17d8dbbb681d96

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