Malicious PDF — malware analysis report

Static analysis result for SHA-256 c12619de69d684fd…

MALICIOUS

PDF

44.2 KB Created: 2020-08-27 14:57:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c560812606389cf5f06f3b440e640d2c SHA-1: 68ace6469f8ade9e4290697af411a013d0432d36 SHA-256: c12619de69d684fd1d90f53573854a23571a0e97726d9882a52a4ae1e1d47f52
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains numerous embedded links, with a critical heuristic firing indicating it's a malicious redirector link farm. The primary URL, https://ttraff.ru/pify?keyword=raves+in+nyc, is identified as a malicious redirector. The document body is heavily obfuscated but contains references to the redirector URL and other Shopify-hosted PDFs, suggesting a coordinated effort to distribute malicious content. No scripts were extracted from this sample.

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.ru/pify?keyword=raves+in+nyc
    • http://files.lindsaywin.com/uploads/1/3/1/3/131383954/lomeropepijije-ligagetuk-kewerubiziz-jujisek.pdf
    • http://files.hinghamconditioning.com/uploads/1/3/1/4/131452778/8b1135dd84fc.pdf
    • http://files.thehoneybsoapcompany.com/uploads/1/3/2/8/132814929/ruxegame-xowajibibukunoj.pdf
    • http://files.robertconroybooks.com/uploads/1/3/0/7/130738550/vamimuputuborisexon.pdf
    • https://cdn.shopify.com/s/files/1/0429/2080/4511/files/bapexulevixolexi.pdf
    • https://cdn.shopify.com/s/files/1/0429/6356/6755/files/mubiso.pdf
    • https://cdn.shopify.com/s/files/1/0431/0306/0128/files/12643364136.pdf
    • https://cdn.shopify.com/s/files/1/0438/9077/0088/files/dinusukodo.pdf
    • https://cdn.shopify.com/s/files/1/0436/0437/7763/files/rojemebeloditoleta.pdf
    • https://cdn.shopify.com/s/files/1/0428/4085/0598/files/waminuxefipovisuxobovuge.pdf
    • https://cdn.shopify.com/s/files/1/0464/2488/3352/files/bebudawogopab.pdf
    • https://cdn.shopify.com/s/files/1/0434/0157/6615/files/fire_emblem_three_houses_edelgard_support_guide.pdf
    • https://cdn.shopify.com/s/files/1/0436/1489/6290/files/vogegolunagasaxo.pdf
    • https://cdn.shopify.com/s/files/1/0431/2009/9488/files/josezelamapuware.pdf
    • https://cdn.shopify.com/s/files/1/0430/7006/2754/files/5509523802.pdf
    • https://cdn.shopify.com/s/files/1/0431/5742/2229/files/rororupeseri.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/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006ed5.bin
142c846896d57dabb77041481f0118d8c1ed20563397b5cd60ee13ddb5c4df78
pdf-font-stream PDF embedded font (sfnt) at offset 0x6ED5 4832 bytes
font_01_sfnt_off00007f66.bin
d63f6c36f52ba0dd018987485195dbf5c11e9ded89db5a9be74d11cb051b6014
pdf-font-stream PDF embedded font (sfnt) at offset 0x7F66 10856 bytes