Malicious PDF — malware analysis report

Static analysis result for SHA-256 6cb399a0396d9410…

MALICIOUS

PDF

46.7 KB Created: 2020-10-18 22:20:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: a2d737aa728492fde76ed33e581a9433 SHA-1: ee96b7ac3f1e625205babe20400828b119a467f2 SHA-256: 6cb399a0396d9410af8676f36844a7d3673a0945b50e32f16b3023a9461cfb35
162 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by an ML classifier and contains a critical heuristic indicating it links to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains the URL 'https://ttraff.club/123?keyword=shiva+wala+game+apk', which is identified as a malicious redirector. Additionally, the PDF exhibits characteristics of a link farm, suggesting an attempt to drive traffic to potentially harmful sites.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://ttraff.club/123?keyword=shiva+wala+game+apk In PDF document text
    • https://cdn-cms.f-static.net/uploads/4367644/normal_5f8c7e1e8bbfb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372702/normal_5f895f5842a3a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373239/normal_5f8c82d195538.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366036/normal_5f8a15bdc9a2e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368752/normal_5f8c680ea839e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371498/normal_5f8b84c2022e5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368485/normal_5f8b4af560f89.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380088/normal_5f8b12fb5603f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366014/normal_5f8729f5d16fc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366005/normal_5f86f416a9ff4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366337/normal_5f8716a9998f1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367925/normal_5f8b0b6d111fe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379035/normal_5f8a2cba996dd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366666/normal_5f8ac4b1ed285.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373782/normal_5f8a61f88cd45.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/4af9966d-7bdb-46e0-a462-f4711bdde68c/dilinox.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/776033fd-ff91-4aa8-a624-9a53719ec423/64737535323.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4cd83fd5-1d33-46d1-a051-c863782838b6/24769800356.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/161f695c-dfe2-49c9-ad8a-bae08ffdd98a/51284626118.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/06b83702-ac7d-43f9-923b-e82e01fd4851/62416908398.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5265/2961/files/states_and_other_institutions_of_power.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0503/4639/3758/files/wudomadokoserotadapeki.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7729/5521/files/mibaresixatutoperagenel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0493/5673/4630/files/puwaj.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_off00005529.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5529 10416 bytes
SHA-256: c12461945953cfbbe90882485dcd9aa5927c432223bbc156514139a724ef1685
font_01_sfnt_off00007771.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7771 5276 bytes
SHA-256: c1ef44e20fd439144a156e2b3fd0a919731f71032fee17f50983bd360b78bbf6
font_02_sfnt_off00008960.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8960 9932 bytes
SHA-256: a71472db65d8c2ee051cdb2fd4ee4f51adcd10014855e8a1d242b1b05c288b3f