Malicious PDF — malware analysis report

Static analysis result for SHA-256 cb6692c4357e351c…

MALICIOUS

PDF

39.2 KB Created: 2020-08-19 15:40:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bacf02980a0b1e482de8960806e8223c SHA-1: f51506af253adffd0c88bf54deafa45bb7b0eabd SHA-256: cb6692c4357e351cd36625810df14c516ef00f90603b893db9b20c9fc4cc1d63
150 Risk Score

Malware Insights

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

The PDF contains a mass of external links, including one identified as a malicious redirector. The document body, though partially corrupted, contains text referencing 'Sports live tv apk for pc' and the malicious redirector URL, indicating a lure to download potentially harmful software. The ML classifier also strongly flagged this PDF as malicious.

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=sports+live+tv+apk+for+pc
    • http://files.nasiiclothingstore.com/uploads/1/3/1/4/131452922/ab3f250548d37a.pdf
    • http://files.bismarckdetailing.com/uploads/1/3/1/4/131406427/1ac725.pdf
    • https://cdn.shopify.com/s/files/1/0431/6138/7170/files/65000510000.pdf
    • https://cdn.shopify.com/s/files/1/0437/7850/6909/files/android_java_checkbox_checked.pdf
    • https://cdn.shopify.com/s/files/1/0429/3967/8886/files/gudig.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/78214852322.pdf
    • https://cdn.shopify.com/s/files/1/0437/9302/3133/files/42736403892.pdf
    • https://cdn.shopify.com/s/files/1/0433/6739/9575/files/adobe_creative_cloud_cancel.pdf
    • https://cdn.shopify.com/s/files/1/0439/7396/8030/files/definicion_y_caracteristicas_de_ciencia.pdf
    • https://cdn.shopify.com/s/files/1/0431/4683/8173/files/b._com_subjects_first_year_list.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_off00005abb.bin
0ae71bce2ca93d1cb1f3672bf2328cd56bd769d534d82ba9dcfb41610af4fc45		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5ABB 5236 bytes
font_01_sfnt_off00006ca2.bin
a6e0a1e0728df41faccbd916c64605f0e6d7721eeb0c6a2eb22c26cc56d3671d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6CA2 10528 bytes

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