Malicious PDF — malware analysis report

Static analysis result for SHA-256 35cd7de297a0db74…

MALICIOUS

PDF

45.9 KB Created: 2020-08-18 20:05:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 98505fb5c8ae3cdee9fd14e8bb823dac SHA-1: 5195e617778add454d5eadb214e2d0eb2ceb9541 SHA-256: 35cd7de297a0db741b055a176a6fa1d74a6c80014eeb2543d27048b1694d6964
150 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with a critical heuristic firing indicating it's a malicious redirector. One prominent URL, 'https://ttraff.ru/pify?keyword=caracteristicas+de+la+familia+anacardiaceae+pdf', is directly linked to malicious redirector infrastructure. The document body, though heavily obfuscated, contains text that appears to be a lure related to 'caracteristicas de la familia anacardiaceae pdf', suggesting a social engineering attempt to drive traffic to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.
  • 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=caracteristicas+de+la+familia+anacardiaceae+pdf
    • http://wamogum.innovativestoneart.com/uploads/1/3/1/3/131380213/5403554ed91.pdf
    • http://lesifaw.tochnorthernregion.org/uploads/1/3/1/3/131398125/patujuxe-kugud-pusenesusagi.pdf
    • http://files.emmanoelleclark.com/uploads/1/3/0/9/130969545/nepevusefotupawevex.pdf
    • https://cdn.shopify.com/s/files/1/0437/4714/7925/files/wudelefapus.pdf
    • https://cdn.shopify.com/s/files/1/0437/9426/8320/files/ankle_rehab_exercises.pdf
    • https://cdn.shopify.com/s/files/1/0432/6224/7067/files/11144419469.pdf
    • https://cdn.shopify.com/s/files/1/0430/1006/4537/files/wekatodar.pdf
    • https://cdn.shopify.com/s/files/1/0435/4398/6327/files/planos_arquitectonicos_de_casas_de_un_piso.pdf
    • https://cdn.shopify.com/s/files/1/0431/0673/0144/files/dokulituvorikisosepifag.pdf
    • https://cdn.shopify.com/s/files/1/0430/1609/3849/files/23906225555.pdf
    • https://cdn.shopify.com/s/files/1/0430/5453/0709/files/wameridewukunonutagikitu.pdf
    • https://cdn.shopify.com/s/files/1/0429/8519/3621/files/pateriwifesivanadoxavobe.pdf
    • https://cdn.shopify.com/s/files/1/0427/8360/4903/files/12997236869.pdf
    • https://cdn.shopify.com/s/files/1/0428/5136/9127/files/korinekibawuzijofonokawo.pdf
    • https://cdn.shopify.com/s/files/1/0432/3350/9534/files/rules_for_discord_server_copy_and_paste.pdf
    • https://cdn.shopify.com/s/files/1/0433/9964/3297/files/dulatob.pdf
    • https://cdn.shopify.com/s/files/1/0432/8964/1116/files/jadukaber.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/
    • https://cdn.shopify.com/s/files/1/0437/9

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000072d0.bin
1580b96856fddd6b3a59702037912df911c279c9704c8e43f3985ba81bd58912
pdf-font-stream PDF embedded font (sfnt) at offset 0x72D0 5208 bytes
font_01_sfnt_off00008467.bin
9a8a15afe6b948a7f29a8869b17693f921a5161ff50fdbf17059406a6a433696
pdf-font-stream PDF embedded font (sfnt) at offset 0x8467 10872 bytes