Malicious PDF — malware analysis report

Static analysis result for SHA-256 d1c8dc581ed6694e…

MALICIOUS

PDF

55.7 KB Created: 2020-09-22 10:42:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 2f73790341e112be87b6f6876a858b43 SHA-1: aeba80ea042c25863b11e1669fecf2536a67b07b SHA-256: d1c8dc581ed6694e6786a2449f2ed3eb1222f61f14582bed6103b4fe8379c6a2
154 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, with one identified as a malicious redirector. The document body, though heavily obfuscated, contains text that appears to be a lure related to 'artificer feats 3.5' and includes the malicious URL. The presence of numerous links suggests 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://ttraff.me/wix?keyword=artificer+feats+3.5 In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://a1957c88-7d17-4561-90e5-ec2de9d3d372.filesusr.com/ugd/bc84a3_23f8ce9327884f9cb6d01f36523c5fc1.pdf?index=trueIn PDF document text
    • https://1878f81b-4d9c-4d6d-8f9e-0d076117eb77.filesusr.com/ugd/e2c223_0fe45cb968d14dc1baad4a4a61ea71a9.pdf?index=trueIn PDF document text
    • https://cab5e330-bbd5-47be-88cf-a283a5aa7c82.filesusr.com/ugd/738632_15a6c8726c1f4a5aa4123cfdf29117e9.pdf?index=trueIn PDF document text
    • https://b3a87cfd-afb5-4800-a986-8c1353730fee.filesusr.com/ugd/e4ee87_2f8258ed9c884a53825351f9cf94d3df.pdf?index=trueIn PDF document text
    • https://760df0e6-fd58-42a2-aef8-f7610407cc11.filesusr.com/ugd/f6336d_d7ecbbaca1014db4a3ec9fce6ffc11a7.pdf?index=trueIn PDF document text
    • https://c33da20b-f1fd-4afe-bf03-08b654e65cd1.filesusr.com/ugd/f14cf6_aefa6076728f434e8e12feb3304fba7f.pdf?index=trueIn PDF document text
    • https://1cbe0d8a-5fee-4913-b241-00d38ddabd84.filesusr.com/ugd/361f4b_182eb7b3382a435082617e04329e018b.pdf?index=trueIn PDF document text
    • https://65c61772-5335-4064-aba5-2ed9596ba073.filesusr.com/ugd/98857b_a6f03e2bacfd4fadbda4790adf020d70.pdf?index=trueIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3685/1874/files/business_partnership_proposal_sample.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2099/9064/files/11157591593.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9212/4572/files/40310823783.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9154/2681/files/14103989164.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4458/6140/files/composite_shapes_worksheet.pdfIn PDF document text
    • https://b3e88129-9317-4dbe-8487-75a604af275d.filesusr.com/ugd/74e9cf_cce8e65c24f247428c5477347ad6f167.pdf?index=trueIn PDF document text
    • https://9f93ff98-ce02-4691-a922-8fe0c231a6f5.filesusr.com/ugd/ce4b7c_0e07fe72af1e41398c0918c65019ea14.pdf?index=trueIn PDF document text
    • https://ba6e116d-0e90-4ce5-af53-ed94574fe074.filesusr.com/ugd/a76634_0f130eeef6264a0d9eb3aeeb7bd439f5.pdf?index=trueIn 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_off00009c8d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9C8D 5152 bytes
SHA-256: 61be87a005b0e14c96b09bdb35a83d2e7fa975f61cfa7a57992673e907ea8f3a
font_01_sfnt_off0000ae30.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAE30 10628 bytes
SHA-256: d0229ce4d3c7d893f5aee153dba20e20ddce963498fd173ac44efff67dfeab58

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