Malicious PDF — malware analysis report

Static analysis result for SHA-256 7d2ce01e3704b491…

MALICIOUS

PDF

43.3 KB Created: 2020-08-30 05:05:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 308adb8d612483900ae2b35392466b74 SHA-1: 2e3bd70d8b2f079be4fbd4da2a6adabf8ab72845 SHA-256: 7d2ce01e3704b4919faa12301113c331020ae754ce45243bf8702607d4d3555b
154 Risk Score

Malware Insights

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

The PDF contains embedded links, one of which, 'https://ttraff.com/wix?keyword=free+spotify+premium+codes+list', is flagged as a malicious redirector. The document body also contains numerous links to PDF files hosted on Shopify, suggesting a link farm or content distribution strategy. The ML classifier strongly indicates maliciousness, and the overall structure points to a phishing or scam attempt.

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.com/wix?keyword=free+spotify+premium+codes+list
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0428/9118/2243/files/vejolasemudamilib.pdf
    • https://cdn.shopify.com/s/files/1/0447/5338/7674/files/wajixuvugoxevapadasu.pdf
    • https://cdn.shopify.com/s/files/1/0434/0252/6887/files/regin.pdf
    • https://cdn.shopify.com/s/files/1/0432/0677/0849/files/futari_no_hero.pdf
    • https://cdn.shopify.com/s/files/1/0427/8219/5879/files/65569397775.pdf
    • https://cdn.shopify.com/s/files/1/0437/7749/1098/files/48053117451.pdf
    • https://cdn.shopify.com/s/files/1/0436/8911/5801/files/3153494339.pdf
    • https://static.usrfiles.com/ugd/b8c837_becfb35f1ec74b3bab30846d1b3064fd.pdf
    • https://static.usrfiles.com/ugd/b8c837_4b64d62141da4b6abc907dac493a2b8c.pdf
    • https://static.usrfiles.com/ugd/b8c837_47bf84b640f6426cb4871c64fbd75f2b.pdf
    • https://static.usrfiles.com/ugd/b8c837_eedcbe1b79fb4250bed3d31a71959b16.pdf
    • https://static.usrfiles.com/ugd/b8c837_c96272b370dc4e5f98cf418d801f244d.pdf
    • https://static.usrfiles.com/ugd/b8c837_1dccb9b98fc04a7bb503fab77e2589b6.pdf
    • https://static.usrfiles.com/ugd/b8c837_ce054c7d533441bb908d312701f67b71.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_off00006b63.bin
ea5657abbaf001d38f42bcc58145db1ad37cdc548c059c01a31e0e8b55c77d00
pdf-font-stream PDF embedded font (sfnt) at offset 0x6B63 5148 bytes
font_01_sfnt_off00007cdc.bin
08c87586677470dcbacd2dbdec596f8f562b220b3ebc78b1a142d6a5265c4f69
pdf-font-stream PDF embedded font (sfnt) at offset 0x7CDC 10492 bytes