Malicious PDF — malware analysis report

Static analysis result for SHA-256 9f2e876000290b52…

MALICIOUS

PDF

42.1 KB Created: 2020-11-05 10:43:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: c7959502cb25a103c12f69b4f54edf6e SHA-1: 5e1eb03f5e86d5299acacd240c93cd3f81415847 SHA-256: 9f2e876000290b5242e0d2f6c39982019d3545e6551cf25e04305519c67cc62e
154 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by a machine learning classifier and contains numerous embedded links. One link, https://gettraff.ru/strik?keyword=pokemon+x+randomizer+rom+download, is identified as a known malicious redirector. The document body contains garbled text but also includes the same URL, suggesting it's a lure. The presence of many external links points to SEO spam or a link farm, likely intended to drive traffic to malicious or unwanted sites.

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=pokemon+x+randomizer+rom+download In PDF document text
    • https://cdn-cms.f-static.net/uploads/4390996/normal_5f94145c0ef83.pdfIn PDF document text
    • https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/kadijamiruvinugeno.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388406/normal_5f993e4e38555.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366397/normal_5f8885fec9804.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451754/normal_5fa0052583747.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393901/normal_5f971f3a009bd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366306/normal_5f879eedae195.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375076/normal_5f998d5d535a5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377381/normal_5f910df0b9d74.pdfIn PDF document text
    • https://pesadosopovito.weebly.com/uploads/1/3/4/2/134235692/8456931.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/jasadavebaga/the_disease_to_please.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/51d30f5c-6911-42bd-a408-f93991d7972e/lodogavuwisimomul.pdfIn PDF document text
    • https://s3.amazonaws.com/tutapaxi/strike_force_heroes_hacked_unblocked_games_66.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000442f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x442F 4776 bytes
SHA-256: 993932a46238adf66ad989098a133b562197f8e08e30f95b239b5c8dbbb8fe97
font_01_sfnt_off00005454.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5454 10372 bytes
SHA-256: d79e5465cf17f5a85cbcc0a52bcab353d396a0a2cb00d1b14eb28aa33a7743a5
font_02_sfnt_off000077dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x77DD 16148 bytes
SHA-256: 64f21e55c2f29c6f605e8f9fd96e7f7b34f9b4a26fdc717ddead948457370e3b
font_03_sfnt_off00008ced.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8CED 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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