Malicious PDF — malware analysis report

Static analysis result for SHA-256 233a27a46c89928e…

MALICIOUS

PDF

113.0 KB Created: 2020-08-31 11:00:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fce75217c2e02d3b423d1dfc544a23fe SHA-1: eda4c87e7bb29aa118d15b34c2553ca911370fae SHA-256: 233a27a46c89928ead527e6e64ce1cb6dbb51b9efb2aac7f5bc125adc4afd406
152 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. The document body, though heavily obfuscated, contains the same URL. This indicates the primary goal is to redirect the user to a malicious site, likely for further exploitation or credential harvesting. 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.com/wix?keyword=meaning+of+organisational+culture+pdf
    • https://cdn.shopify.com/s/files/1/0466/7457/5525/files/2004_chrysler_crossfire_performance_upgrades.pdf
    • https://cdn.shopify.com/s/files/1/0433/8909/1998/files/format_python_code_in_vscode.pdf
    • https://cdn.shopify.com/s/files/1/0433/9073/0405/files/sapatuwoveg.pdf
    • https://cdn.shopify.com/s/files/1/0433/4593/6534/files/20978512486.pdf
    • https://cdn.shopify.com/s/files/1/0431/2399/8874/files/sukodod.pdf
    • https://cdn.shopify.com/s/files/1/0437/9167/9637/files/watch_die_harder_online_free.pdf
    • https://cdn.shopify.com/s/files/1/0452/4752/9117/files/annotated_bibliography_sample_mla.pdf
    • https://cdn.shopify.com/s/files/1/0430/9119/8112/files/carcinomatose_peritoneal.pdf
    • https://cdn.shopify.com/s/files/1/0431/3851/5098/files/69016440338.pdf
    • https://static.usrfiles.com/ugd/b8c837_01c0d35c53b741568e686c0c6e08911c.pdf
    • https://static.usrfiles.com/ugd/3826db_7c9738043f6d44808c8f3774fd150513.pdf
    • https://cdn.shopify.com/s/files/1/0429/7303/6697/files/pabenolulezajeluler.pdf
    • https://cdn.shopify.com/s/files/1/0431/9143/5422/files/60749390595.pdf
    • https://cdn.shopify.com/s/files/1/0449/1906/2695/files/how_to_write_action_research_proposal.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_off00017370.bin
cf86560336b97ac79c3072e1c2311be16149e56f85f69a2fd1ce4aa60f973b11
pdf-font-stream PDF embedded font (sfnt) at offset 0x17370 5328 bytes
font_01_sfnt_off000185a3.bin
db8ce6a0661ab5aa1547e47d5fd8ef62108f3d9f6dfdc6456370f717ce3134f3
pdf-font-stream PDF embedded font (sfnt) at offset 0x185A3 15848 bytes