Malicious PDF — malware analysis report

Static analysis result for SHA-256 db3adbd536ae2c84…

MALICIOUS

PDF

49.4 KB Created: 2020-10-16 09:03:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 8fdd119ca3dac470addd9f4791a79f35 SHA-1: 15c88c9572fe555fbe4c9c8251e39df3b6fc4c06 SHA-256: db3adbd536ae2c8430af311c19be70cfd46d6a4bdf1b702b1f9e2c73a711c44b
154 Risk Score

Malware Insights

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

The PDF contains a link farm with 30 external PDF links, many of which are numeric slugs, and one link points to a known malicious redirector. The document body contains a lure related to 'Pokemon rom download gba android' and the malicious URL. This suggests the PDF is designed to trick users into visiting malicious sites, likely for further exploitation or malware delivery.

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/123?keyword=pokemon+rom+download+gba+android In PDF document text
    • https://cdn-cms.f-static.net/uploads/4368951/normal_5f88be360ac13.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366005/normal_5f874f8e73113.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369190/normal_5f879af273f24.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370785/normal_5f8845db4a254.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366623/normal_5f8738a85e206.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365582/normal_5f86fa7b15084.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367302/normal_5f8853637d8bb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369185/normal_5f88a31bd5355.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366035/normal_5f88dbc059763.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365552/normal_5f8742c8798f9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369640/normal_5f88d53550423.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371265/normal_5f88befc3e1ae.pdfIn PDF document text
    • https://remewizefo.weebly.com/uploads/1/3/1/8/131856163/bugege_soxowi.pdfIn PDF document text
    • https://xifobosakup.weebly.com/uploads/1/3/2/8/132815359/44eb3f98510ed50.pdfIn PDF document text
    • https://xawuwotogot.weebly.com/uploads/1/3/2/6/132695388/xofotojepexulevezomi.pdfIn PDF document text
    • https://popilezofale.weebly.com/uploads/1/3/1/1/131164236/ronuwesokibewasoti.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/1/0500/0629/4688/files/90336121924.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/9741/8645/files/54552042159.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0839/1330/files/petijuba.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/3272/6680/files/34685528436.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0f513881-1d8d-4a3a-a56c-8803deab5e09/berepasumemokiwes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6f9af5d0-50ae-47a4-b12c-24f6164fb940/6436850356.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3e1528a6-ab40-4319-b421-a05f0c6a3944/kusorirukome.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_off00008046.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8046 5264 bytes
SHA-256: e8d633d9d6e34924b5b85ece516852b3e757d5e423835e2cfcf8d278bbde9606
font_01_sfnt_off00009222.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9222 11140 bytes
SHA-256: 676507d294e2383d01a67145d411602017c84f7c2e3a9cac133f4fbbea80f1dc

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