Malicious PDF — malware analysis report

Static analysis result for SHA-256 01a6a6c743b06fc1…

MALICIOUS

PDF

42.9 KB Created: 2020-08-31 01:18:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 07db6389477d21bba50c8bb663c4b646 SHA-1: 509c8bdd224db85c815ba5a188ae9873dc58b2bd SHA-256: 01a6a6c743b06fc1be2df7d6db63523867f0a7c2cc5d6cb375312097b47b456b
154 Risk Score

Malware Insights

MITRE ATT&CK
T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF file contains a link farm of 14 external PDF documents, with the primary link directing to a known malicious redirector. The document body, though heavily obfuscated, contains the malicious URL. This suggests an attempt to drive traffic to malicious infrastructure, likely for further exploitation or phishing.

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.cc/wix?keyword=younique+royalty+line
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static.usrfiles.com/ugd/01e791_c310d413b566415f822be6935917a2d0.pdf
    • https://static.usrfiles.com/ugd/ca32a8_b521398ed96e49daba06ab231707e07f.pdf
    • https://static.usrfiles.com/ugd/191a6d_65642ca62a724517a57214c5fc015fae.pdf
    • https://static.usrfiles.com/ugd/3dd68e_8728e6f5a7c948d09e459eeb6795e40c.pdf
    • https://static.usrfiles.com/ugd/b4a829_38637f3a8fcf4be1aba84618f4c8c1c2.pdf
    • https://static.usrfiles.com/ugd/353d00_dafe8f2c2c874a18a24eab923604967c.pdf
    • https://static.usrfiles.com/ugd/f55bec_f33715f00de045058f620c7d9c006cb9.pdf
    • https://static.usrfiles.com/ugd/a2e20a_5719abfb061b456ba013c85917e89ec6.pdf
    • https://cdn.shopify.com/s/files/1/0428/4583/1335/files/ecg_manual.pdf
    • https://cdn.shopify.com/s/files/1/0432/2023/8503/files/jafogivesezagifexop.pdf
    • https://static.usrfiles.com/ugd/b8c837_f5eccc9b80a5459c9e43c2885ebfc1c8.pdf
    • https://static.usrfiles.com/ugd/5cf23b_7c4271be0ba24a759435c5f966909b14.pdf
    • https://static.usrfiles.com/ugd/b8c837_e0c3c45da79249788ec0ee31b601bc21.pdf
    • https://static.usrfiles.com/ugd/b444d4_392f0c1445e94aaba153510f6bef9c0c.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/
    • https://savannah.gnu.org/projects/freefont/
    • http://www.gnu.org/licenses/
    • http://www.gnu.org/copyleft/gpl.html
    • http://scripts.sil.org/OFL

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000051cf.bin
24fd6868f187b5667792517f9f69d22ac5a3de5011d4d3824467392effeade79		 pdf-font-stream PDF embedded font (sfnt) at offset 0x51CF 6588 bytes
font_01_sfnt_off00006249.bin
90f692fe54e88e3aef1c8a4da9e682bd58a9312cf2b32db5c3323a701dd21de0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6249 4688 bytes
font_02_sfnt_off0000724c.bin
491e203cea73dc05c7ff7f82de9d4bd290d8280e1dc6e4968b75f8dc83dfcd84		 pdf-font-stream PDF embedded font (sfnt) at offset 0x724C 2628 bytes
font_03_sfnt_off00007dbf.bin
684b7348c15f68439ac7c4b2bd9c051e62675ed3faff6ec7471c9cec18a2f945		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7DBF 9552 bytes

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