Malicious PDF — malware analysis report

Static analysis result for SHA-256 6d9fae1cafd1b280…

MALICIOUS

PDF

79.6 KB Created: 2020-09-08 18:56:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2cafe86deca267e093e6208890a65344 SHA-1: 65d26f3cd5a14f7f84a4aa859a274ea937ce32f3 SHA-256: 6d9fae1cafd1b28040111772f570302d473f7882a2f9da18f40f03d87bcb1c78
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF contains a link to a known malicious redirector, identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. Additionally, the SE_ADVANCE_FEE_SCAM_LURE heuristic indicates the document's content is designed to deceive users into believing they are involved in a lottery or prize scheme, requiring them to pay fees for delivery. The ML_NYX_PDF_MALICIOUS classifier strongly supports the malicious nature of this PDF.

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.
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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.cc/wix?keyword=abc+reporters+adelaide
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static.usrfiles.com/ugd/a2e20a_7c8cbc1372704253b9659ff18abf4e55.pdf
    • https://static.usrfiles.com/ugd/6846fe_1d3740b020f049539ebaad979ea92a22.pdf
    • https://static.usrfiles.com/ugd/b48b60_e1b8c1c9877548b399d1c2679902242e.pdf
    • https://static.usrfiles.com/ugd/ccb1c6_af3da02434af4ee5be65abec85ee6c80.pdf
    • https://cdn.shopify.com/s/files/1/0430/3863/8241/files/15059625810.pdf
    • https://cdn.shopify.com/s/files/1/0440/6870/0325/files/75700640502.pdf
    • https://cdn.shopify.com/s/files/1/0431/1633/1172/files/sq11_mini_dv_camera_manual.pdf
    • https://cdn.shopify.com/s/files/1/0430/2602/2557/files/54193161118.pdf
    • https://static.usrfiles.com/ugd/185c00_6efe743afbae406d9ccb2d45d377e021.pdf
    • https://static.usrfiles.com/ugd/d1fcfc_6f411b45b7544daab9f4bf88bce4c9ec.pdf
    • https://static.usrfiles.com/ugd/8e1900_b9aaaf83f7f240449f46667cad552c88.pdf
    • https://static.usrfiles.com/ugd/800b88_dcad6cedf108431cb450b9f43db1e19e.pdf
    • https://static.usrfiles.com/ugd/16879a_b4369becdd614bbaae25de30ec59e698.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eb1b.bin
52c0c6b5d7173c8c98dc1e7b0ca41a215d572aa7d02190f93a7b2890f35a9877		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEB1B 5196 bytes
font_01_sfnt_off0000fccd.bin
15d15d27b850c35a24ce016de0fc16d4227508bbe5060a1349d975e2a2cb0e66		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFCCD 17248 bytes

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