Malicious PDF — malware analysis report

Static analysis result for SHA-256 e3824cf7e09cf881…

MALICIOUS

PDF

42.9 KB Created: 2020-08-22 06:09:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0001406b504540e0ee3275f8c17009b0 SHA-1: 4703dbcbc21883b8bebbc85611a7049ada1244ea SHA-256: e3824cf7e09cf88106ef60e12cf8be48ac3a430334259d91bf52de78f8b79de3
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains numerous embedded links, with a critical heuristic firing indicating a link to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains text related to 'antisocial personality disorder symptoms pdf' and the malicious redirector URL. This suggests the PDF is designed to trick users into clicking the link, likely leading to a phishing or malware download site.

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.cc/pify?keyword=antisocial+personality+disorder+symptoms+pdf
    • http://xometakus.blsconsultingfirm.com/uploads/1/3/2/7/132710712/sigofom.pdf
    • http://files.handmadebybek.com/uploads/1/3/1/4/131407227/gavemuvaseveva-jesotamadomon.pdf
    • http://bifine.wickedfreshsalad.com/uploads/1/3/0/7/130776779/kizimufenuvelofok.pdf
    • https://cdn.shopify.com/s/files/1/0432/9078/8000/files/46521662242.pdf
    • https://cdn.shopify.com/s/files/1/0434/2166/3397/files/58518268620.pdf
    • https://cdn.shopify.com/s/files/1/0435/0931/7787/files/detuladaporatewukuxugix.pdf
    • https://cdn.shopify.com/s/files/1/0429/7365/9292/files/99685318079.pdf
    • https://cdn.shopify.com/s/files/1/0454/6691/0872/files/application_of_enzymes_in_biotechnology.pdf
    • https://cdn.shopify.com/s/files/1/0430/7258/5888/files/20453255776.pdf
    • https://cdn.shopify.com/s/files/1/0432/9183/6566/files/bhagavad_gita_in_sanskrit_with_meaning.pdf
    • https://cdn.shopify.com/s/files/1/0431/5430/9274/files/96756366056.pdf
    • https://cdn.shopify.com/s/files/1/0448/1508/9825/files/reading_passages_with_blends_and_digraphs.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_off00006986.bin
bfa5bc9863d1f3617f926417c646878b178a7ec07cf85dd8ee488bb336fb8910		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6986 5392 bytes
font_01_sfnt_off00007bc9.bin
d48e2544cbeab2e32a769d739d25061c4f88729fc6b8649927a4066f120b27fd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7BC9 10192 bytes

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