Malicious PDF — malware analysis report

Static analysis result for SHA-256 9fbb45fe9b0a8abf…

MALICIOUS

PDF

40.7 KB Created: 2020-08-06 17:35:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7eb0d81ad5c1275614f8854c5c631f0c SHA-1: 9207c99f167119d2be3761aebe2efda8d8f7aa5a SHA-256: 9fbb45fe9b0a8abfe36237f0e9a5c897dc97d4d7fa6f78ee2bfca17ccf3643b4
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=simple+nitrogen+cycle+pdf'. This URL is presented within the document body, disguised as a benign PDF title. The file also exhibits characteristics of a link farm, with numerous embedded URLs, many pointing to Shopify domains, likely for SEO manipulation or to obscure the malicious redirector. The primary intent appears to be directing users to the malicious ttraff.ru domain.

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=simple+nitrogen+cycle+pdf
    • http://files.sabiland.com/uploads/1/3/1/3/131384635/zububibubil_weduketu_wunowuberevozij.pdf
    • http://files.rosewoodandyork.com/uploads/1/3/1/3/131398097/xebimewakabafamono.pdf
    • http://fupogawa.danniles.com/uploads/1/3/1/3/131398560/401024b00.pdf
    • http://files.myequinesolutions.com/uploads/1/3/1/6/131607522/tikufutevivugi_nidebukoxadadow_kizanifani.pdf
    • https://cdn.shopify.com/s/files/1/0432/5851/1522/files/science_fair_abstract.pdf
    • https://cdn.shopify.com/s/files/1/0429/6422/2101/files/55366166999.pdf
    • https://cdn.shopify.com/s/files/1/0431/8252/2517/files/5564524224.pdf
    • https://cdn.shopify.com/s/files/1/0432/6152/6179/files/sociologija_klett.pdf
    • https://cdn.shopify.com/s/files/1/0433/5704/4890/files/38536527329.pdf
    • https://cdn.shopify.com/s/files/1/0429/7008/7587/files/zigutizoza.pdf
    • https://cdn.shopify.com/s/files/1/0433/7342/8888/files/analemmatic_sundial_generator.pdf
    • https://cdn.shopify.com/s/files/1/0437/6113/9861/files/66671889597.pdf
    • https://cdn.shopify.com/s/files/1/0429/0691/0887/files/gazipesigalure.pdf
    • https://cdn.shopify.com/s/files/1/0436/5156/3670/files/anestesia_geral_veterinaria.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/fiwowosilikaragufes.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_off00006269.bin
a5bc8fa63c965a109a578129cb6be551e5b469a4a042f61af018f6804565ac03		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6269 5292 bytes
font_01_sfnt_off00007460.bin
20304b05792c2ad2a12c794c0e33a8f9f0bff040b93a51b062448e4b4aa93a37		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7460 9732 bytes

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