Malicious PDF — malware analysis report

Static analysis result for SHA-256 67915e38773c19f2…

MALICIOUS

PDF

47.9 KB Created: 2020-09-01 12:47:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bebbeac9e9cac7a07bec14baa0654f92 SHA-1: 169c4299125bf0b5e5a51e238d9dff9e1ffce31b SHA-256: 67915e38773c19f2ee7cb9656687400cc27f747d3ebf4d611478507a9f5e6b8d
154 Risk Score

Malware Insights

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

The PDF contains a link that redirects to known malicious infrastructure, disguised as an Australian visa application form. The ML classifier strongly indicates maliciousness. The document body and embedded URLs suggest a phishing or scam attempt, likely to redirect users to a malicious site for further exploitation.

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=australia+visa+tourist+application+form
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0429/8371/9071/files/airdroid_pc_apk.pdf
    • https://cdn.shopify.com/s/files/1/0428/8679/1334/files/wonijeruxaz.pdf
    • https://cdn.shopify.com/s/files/1/0431/2170/5124/files/wunobojotovuraduvopa.pdf
    • https://static.usrfiles.com/ugd/3b7182_5d411cc4f7e0461aac3429bb931d52c3.pdf
    • https://static.usrfiles.com/ugd/1decf9_67ac9cd98a1c450991c266f77bf1ef83.pdf
    • https://static.usrfiles.com/ugd/d2751c_c2842365ba3d49c990e041ebf9147ab3.pdf
    • https://static.usrfiles.com/ugd/b8c837_858a0e1b2271467fb873f52722be63ce.pdf
    • https://static.usrfiles.com/ugd/bfbc46_b093dd9b650a4d06a1a67498f5b4e065.pdf
    • https://static.usrfiles.com/ugd/b8c837_87d00bb687ca4e67b4ae52a38c2d35ef.pdf
    • https://static.usrfiles.com/ugd/02beb7_63136a8b14bf4b4b8eb9f076bb9b2796.pdf
    • https://static.usrfiles.com/ugd/b8c837_0b6c745be44b4880b4906a0e94e2621d.pdf
    • https://static.usrfiles.com/ugd/3fc21f_b5e63b32717848f9a03b0be09937f768.pdf
    • https://static.usrfiles.com/ugd/5fd5c1_78debccbb622405f8f54b4590fe1ac97.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007050.bin
4476db5fd3055d534ac4aa6ee2496440b45cd3aaf781bac372e4c3b77bb2654b
pdf-font-stream PDF embedded font (sfnt) at offset 0x7050 4972 bytes
font_01_sfnt_off00008118.bin
82d31fbc3711fb54fcc1b408c7a01d2580c2ef2965cafc3f41d651c9bb9c8542
pdf-font-stream PDF embedded font (sfnt) at offset 0x8118 10492 bytes
font_02_sfnt_off0000a4c4.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e
pdf-font-stream PDF embedded font (sfnt) at offset 0xA4C4 4324 bytes