Malicious PDF — malware analysis report

Static analysis result for SHA-256 607ca0b587712d64…

MALICIOUS

PDF

41.4 KB Created: 2020-08-23 04:23:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d613ec50ee18ffb0a6448d316bc9493c SHA-1: 715bc91d33d82d31b0459bc969af745b28d19ec0 SHA-256: 607ca0b587712d647981cc5c99a146273e51e7900a50a4367bd0410da7f15a61
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.cc/pify?keyword=adobe+audition+cc+2018', is flagged as a malicious redirector. The document body, though heavily obfuscated, also contains this URL, suggesting an attempt to trick users into clicking it. The presence of numerous other PDF links, many hosted on Shopify, indicates a link farm strategy, likely to obscure the malicious destination. The ML classifier strongly supports the malicious nature of this PDF.

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/pify?keyword=adobe+audition+cc+2018
    • http://files.lifetimehealth.net/uploads/1/3/1/1/131164479/5668573.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0452/3288/1824/files/62279666267.pdf
    • https://cdn.shopify.com/s/files/1/0428/7083/3319/files/38337861103.pdf
    • https://cdn.shopify.com/s/files/1/0434/3837/5074/files/19779469845.pdf
    • https://cdn.shopify.com/s/files/1/0435/4929/4756/files/61345978036.pdf
    • https://cdn.shopify.com/s/files/1/0428/3292/0732/files/31529438309.pdf
    • https://cdn.shopify.com/s/files/1/0432/9147/6133/files/voxaga.pdf
    • https://cdn.shopify.com/s/files/1/0432/4474/8950/files/pitoxidanominijaju.pdf
    • https://cdn.shopify.com/s/files/1/0429/5252/3929/files/76651913707.pdf
    • https://cdn.shopify.com/s/files/1/0430/9054/2743/files/badonazuxo.pdf
    • https://cdn.shopify.com/s/files/1/0429/6258/3711/files/71103689154.pdf
    • https://cdn.shopify.com/s/files/1/0438/4528/8093/files/galaxias_para_nios.pdf
    • https://cdn.shopify.com/s/files/1/0433/1628/1512/files/78729259133.pdf
    • https://cdn.shopify.com/s/files/1/0427/7318/4678/files/losik.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/wexidemunuviviradepinitim.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_off000064d2.bin
120160500964cfb5d6c7e5b63cae04ba0ca583647636b57e823ad66e54da8e88
pdf-font-stream PDF embedded font (sfnt) at offset 0x64D2 5276 bytes
font_01_sfnt_off000076d9.bin
7224da826121039ced084789798fdbded03ce424e04438d1a5bc5fb250702de0
pdf-font-stream PDF embedded font (sfnt) at offset 0x76D9 9844 bytes