Malicious PDF — malware analysis report

Static analysis result for SHA-256 716f213be8671871…

MALICIOUS

PDF

42.0 KB Created: 2020-09-10 11:16:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: cc8c491de3d8fd010c3216b77d3f2775 SHA-1: 2d6a17d2d9e0dbff24db6ad59fe206a18322836e SHA-256: 716f213be86718716397e876a022c97f941b51ea3489d8c6a5c74a9a4cdc3ec9
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a link farm and a redirector link disguised as a download for 'Azure data studio for mac'. The primary malicious URL, 'https://ttraff.link/wix?keyword=azure+data+studio++for+mac', is flagged as a malicious redirector. The document's structure and numerous external links suggest a phishing or scam attempt to drive traffic to malicious sites.

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.link/wix?keyword=azure+data+studio++for+mac
    • http://fonuk.wickedque.net/uploads/1/3/2/6/132682883/ff6e6.pdf
    • http://files.nfpplanning.com/uploads/1/3/0/8/130873794/voxaniluju.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static.usrfiles.com/ugd/275374_798e82182d9a41bc9be3fe493f83cad8.pdf
    • https://static.usrfiles.com/ugd/3b47cb_bfbc8b1315a94fcf9c068b891b9a2006.pdf
    • https://static.usrfiles.com/ugd/b8c837_e224d62e4625486586df7525c34f32e9.pdf
    • https://static.usrfiles.com/ugd/15ebe2_27bad6304f5f4336a7f19c2732c59043.pdf
    • https://static.usrfiles.com/ugd/b8c837_ea766fa082de4f4b8f9cab86dc92a606.pdf
    • https://static.usrfiles.com/ugd/ade4e6_8a8b90c80e9c482db83aa657a52ae41c.pdf
    • https://static.usrfiles.com/ugd/c57cae_c40a022ea6ca4ff7a99430bdf9ef9bbb.pdf
    • https://static.usrfiles.com/ugd/5fd5c1_47896a7ee36d4e1aac150052adecde83.pdf
    • https://static.usrfiles.com/ugd/3aca14_7300f3f37dab40f0a335a893ea6d567a.pdf
    • https://static.usrfiles.com/ugd/451a43_c2d2ae2390524ac2b45f4d57dd9f095c.pdf
    • https://static.usrfiles.com/ugd/941881_26f580d407684504a084a7a14ccf1ff3.pdf
    • https://static.usrfiles.com/ugd/6cf0f5_f6e430b4efff4d53a665b7fe6a47f3b4.pdf
    • https://static.usrfiles.com/ugd/29c71c_9501c32c73194c639cf87abdbe0ec8a6.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_off000067a6.bin
ab5b7b14c8c061d3c4b5cbc3b3f869c6f88e3d61262b183fee46e8d9affc9a30
pdf-font-stream PDF embedded font (sfnt) at offset 0x67A6 5176 bytes
font_01_sfnt_off00007934.bin
6f7a0faa1c7e7600ab78d030f0339ff5090bb06f573b8fa550216aaebbf391e0
pdf-font-stream PDF embedded font (sfnt) at offset 0x7934 10008 bytes