Malicious PDF — malware analysis report

Static analysis result for SHA-256 9ec92b808c7af0e0…

MALICIOUS

PDF

43.0 KB Created: 2020-08-03 03:46:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5a7c53e3bbe31924130981d7b12cbf80 SHA-1: c8e107922f4e1bc1d891ce7557364a8ed0238fac SHA-256: 9ec92b808c7af0e083fb3f5becb605d976f28a8f70fe3863c1ed5c2d810070b8
120 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with a primary link pointing to a known malicious redirector at https://ttraff.com/pify?keyword=install+github+linux. This indicates a phishing or social engineering attempt to direct the user to malicious content. No scripts were extracted from this sample, and the document body is heavily obfuscated, but the presence of the malicious redirector is a strong indicator of malicious intent.

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=install+github+linux
    • http://gumiwu.profetis.net/uploads/1/3/1/6/131607712/e6c3d4fcf8541c5.pdf
    • http://files.stickittothestigma.com/uploads/1/3/1/6/131606968/kizejukezol.pdf
    • http://files.watervillefederated.com/uploads/1/3/0/7/130776562/54260891.pdf
    • http://files.jessicabarkltheaterartist.com/uploads/1/3/0/7/130775974/menanuvoniked_gorewo.pdf
    • https://cdn.shopify.com/s/files/1/0431/7046/3912/files/82082542404.pdf
    • https://cdn.shopify.com/s/files/1/0431/5113/0785/files/gotham_s03e01_torrent.pdf
    • https://cdn.shopify.com/s/files/1/0432/6676/9051/files/3054240339.pdf
    • https://cdn.shopify.com/s/files/1/0436/0686/8126/files/sukududenosemis.pdf
    • https://cdn.shopify.com/s/files/1/0432/5765/9547/files/gixus.pdf
    • https://cdn.shopify.com/s/files/1/0428/8138/4604/files/xufixakejozunez.pdf
    • https://cdn.shopify.com/s/files/1/0430/9165/6864/files/66364571436.pdf
    • https://cdn.shopify.com/s/files/1/0430/2965/9805/files/99056879774.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/40369191557.pdf
    • https://cdn.shopify.com/s/files/1/0435/1338/1028/files/66943057592.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005ebe.bin
f16779e9d01c672d056fd8c586ed7e72b3d947e78a4be63f03871bf6b560dc4e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5EBE 4652 bytes
font_01_sfnt_off00006e70.bin
812be5f77408c14164c57fad680021cb076c97e81b48ac31b2659bbd7f5d1058		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E70 10212 bytes
font_02_sfnt_off0000917b.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34		 pdf-font-stream PDF embedded font (sfnt) at offset 0x917B 4324 bytes

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