Malicious PDF — malware analysis report

Static analysis result for SHA-256 f850daf16cd3af16…

MALICIOUS

PDF

48.8 KB Created: 2020-07-31 08:21:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 67b967d56321427921e2ba009911f157 SHA-1: bd9996887489032d02373587887eca5f32ff41ae SHA-256: f850daf16cd3af1637c7337f7b3545ac03c954b9450641441e3facd39b84018c
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=enfermedades+que+causa+el+alcoholismo+pdf'. Additionally, it exhibits a PDF link farm heuristic, with numerous external PDF links hosted on domains like cdn.shopify.com. The document body, though heavily obfuscated, contains metadata suggesting it was generated by wkhtmltopdf and includes the same keyword as the malicious URL, indicating a potential SEO poisoning or content redirection scheme.

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.ru/pify?keyword=enfermedades+que+causa+el+alcoholismo+pdf
    • http://files.grimousironblood.com/uploads/1/3/2/8/132815298/1499270.pdf
    • http://files.livingwaterscooperative.org/uploads/1/3/2/7/132710669/00caf61c3e.pdf
    • http://files.oldworldtarotandremedies.com/uploads/1/3/0/7/130738870/fuzegelomora-liritipirubape-demobiduzus-sozubiz.pdf
    • http://files.liviskitchen.net/uploads/1/3/0/8/130814411/6232526.pdf
    • https://cdn.shopify.com/s/files/1/0429/9977/5381/files/52466451362.pdf
    • https://cdn.shopify.com/s/files/1/0438/5452/8677/files/wijosinogesiparemewagawu.pdf
    • https://cdn.shopify.com/s/files/1/0431/4251/2797/files/51968245588.pdf
    • https://cdn.shopify.com/s/files/1/0436/2023/7475/files/bepusuzero.pdf
    • https://cdn.shopify.com/s/files/1/0437/0527/0437/files/87123684870.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/42632515291.pdf
    • https://cdn.shopify.com/s/files/1/0432/5274/4356/files/wezul.pdf
    • https://cdn.shopify.com/s/files/1/0434/0695/0557/files/47816737938.pdf
    • https://cdn.shopify.com/s/files/1/0435/5656/9247/files/xerinedidovazetuxe.pdf
    • https://cdn.shopify.com/s/files/1/0429/8162/1919/files/9205414901.pdf
    • https://cdn.shopify.com/s/files/1/0440/1889/2958/files/kexapepudewesefurubu.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • https://medlineplus.gov/spanish/alcoholusedisorderaud.html
    • 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_off00007e39.bin
77ccf1a6f180af886f6a4c0afe05fa8f8256ac8938ac1c8c5e364009b33fccf4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7E39 5280 bytes
font_01_sfnt_off00008feb.bin
2152317fafe3330d11c97fa624c32f0add4d20b11806223e185ca6f1b99709af		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8FEB 11256 bytes

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