Malicious PDF — malware analysis report

Static analysis result for SHA-256 8b45a0d4f6ef6a24…

MALICIOUS

PDF

53.0 KB Created: 2020-08-10 04:46:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c2801e7313e9c832b66e387459996fea SHA-1: 340d38919cfd6e594ca014dae3b70cd8bc541b20 SHA-256: 8b45a0d4f6ef6a246a3a131b7545e6893486984c37de7246633d673f35f1c6b6
150 Risk Score

Malware Insights

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

The PDF contains a link that redirects to a known malicious domain, disguised as interview questions. The document body and heuristics indicate a lure to a malicious redirector. No scripts were extracted, but the PDF structure and embedded links strongly suggest a phishing or redirection attack.

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.com/pify?keyword=it+infrastructure+project+manager+interview+questions+and+answers+pdf
    • http://vizuma.doodlefaces.net/uploads/1/3/1/3/131380213/7221562.pdf
    • http://files.cleoejacksoniii.com/uploads/1/3/1/3/131384674/dedafexuzugodij-muvagudapamile-tudesononu-beberetiwifopi.pdf
    • http://mufozil.oakmontart.com/uploads/1/3/1/3/131380480/1130219.pdf
    • http://files.simplyskinandbody.com/uploads/1/3/1/0/131070351/pigetavewukowek.pdf
    • http://files.paintedbuttonquail.com/uploads/1/3/2/3/132302802/da59a1561598b6.pdf
    • https://cdn.shopify.com/s/files/1/0429/0304/4263/files/2067993505.pdf
    • https://cdn.shopify.com/s/files/1/0431/2816/0418/files/kojikug.pdf
    • https://cdn.shopify.com/s/files/1/0437/7939/1637/files/resawetetuzetifimesare.pdf
    • https://cdn.shopify.com/s/files/1/0440/1440/3742/files/sotepapajuzebewalig.pdf
    • https://cdn.shopify.com/s/files/1/0448/4051/7792/files/2017_postage_rate_chart.pdf
    • https://cdn.shopify.com/s/files/1/0435/7141/3160/files/paediatric_anesthesia.pdf
    • https://cdn.shopify.com/s/files/1/0430/6888/3106/files/forobosogaroso.pdf
    • https://cdn.shopify.com/s/files/1/0428/5494/0828/files/buwujeximamed.pdf
    • https://cdn.shopify.com/s/files/1/0429/4190/7100/files/osrs_slug_menace.pdf
    • https://cdn.shopify.com/s/files/1/0438/3378/6525/files/sklearn_logistic_regression.pdf
    • https://cdn.shopify.com/s/files/1/0437/0196/0854/files/gepudibiralezaxijafedede.pdf
    • https://cdn.shopify.com/s/files/1/0429/5557/1356/files/miresawawe.pdf
    • https://cdn.shopify.com/s/files/1/0430/8716/7637/files/cauliflower_recipes_in_tamil.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_off00009025.bin
8c5ef69baf634aef2e7b15a1ae26f5cc7a2022309fe4f07c3dbdac9ee9dcbbe5
pdf-font-stream PDF embedded font (sfnt) at offset 0x9025 5732 bytes
font_01_sfnt_off0000a3a5.bin
15ffb146f37efcc8acccb38fc2263f2853c8a3be36fd6f66ed11dded639ebeff
pdf-font-stream PDF embedded font (sfnt) at offset 0xA3A5 9976 bytes