Malicious PDF — malware analysis report

Static analysis result for SHA-256 a82447844bbdcc93…

MALICIOUS

PDF

48.1 KB Created: 2020-08-12 02:04:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2a91f4e06111602469849003ba3f9ceb SHA-1: 5ceea3b8b5401e1218ba5ad6d5c93eb6fa515b7c SHA-256: a82447844bbdcc93b2a13657faf8c3f91abc2de2198339d7c1cb04c3808f6964
154 Risk Score

Malware Insights

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

The PDF contains embedded links, with one pointing to a known malicious redirector at 'ttraff.com'. The document body, though partially corrupted, includes the same URL and a title suggesting a lure for 'auditoria externa concepto pdf'. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' and 'ML_NYX_PDF_MALICIOUS' strongly indicate malicious intent, likely for phishing or malware delivery. No scripts were extracted, limiting the analysis of specific execution chains.

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/pify?keyword=auditoria+externa+concepto+pdf
    • http://files.onedollarapologist.net/uploads/1/3/1/4/131407148/fisojijirofoforiwepe.pdf
    • http://vumudubis.resurrectionofarunner.com/uploads/1/3/1/6/131606027/21af6c30cd07208.pdf
    • http://tuzuza.wiccloutreach.info/uploads/1/3/2/6/132681443/zukorog.pdf
    • https://cdn.shopify.com/s/files/1/0428/1512/7708/files/jokupatukedugixogo.pdf
    • https://cdn.shopify.com/s/files/1/0430/8025/3593/files/nosler_reloading_guide_7_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/rumifagekesodurelakalon.pdf
    • https://cdn.shopify.com/s/files/1/0431/3242/0262/files/86691066444.pdf
    • https://cdn.shopify.com/s/files/1/0428/7594/5126/files/21944353487.pdf
    • https://cdn.shopify.com/s/files/1/0429/6094/5305/files/carcinoma_in_situ_cervical.pdf
    • https://cdn.shopify.com/s/files/1/0430/8176/0935/files/autocad_electrical_import.pdf
    • https://cdn.shopify.com/s/files/1/0429/7631/3503/files/goxiruxavuwimimozezogola.pdf
    • https://cdn.shopify.com/s/files/1/0449/1807/9655/files/beyond_good_and_evil_nietzsche_download.pdf
    • https://cdn.shopify.com/s/files/1/0434/0049/5260/files/5330173302.pdf
    • https://cdn.shopify.com/s/files/1/0440/2269/4046/files/geometry_mcgraw_hill.pdf
    • https://cdn.shopify.com/s/files/1/0434/1799/3366/files/mibedewagizipi.pdf
    • https://cdn.shopify.com/s/files/1/0430/1075/2663/files/sulopibikufufirajebi.pdf
    • https://cdn.shopify.com/s/files/1/0433/6818/6015/files/fipoweravexuro.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_off00007a67.bin
96c68bca66efa8a8c1d9b52a2133ebccb38047542931719a9c37c0cd1c17b8bb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7A67 4996 bytes
font_01_sfnt_off00008b78.bin
e3e3c5f959a7d0ca2ba401628a128ec3e920d4b42db6a579611fab765f339b5c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8B78 12168 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.