Malicious PDF — malware analysis report

Static analysis result for SHA-256 b90440574f1c7df6…

MALICIOUS

PDF

35.5 KB Created: 2020-08-26 02:30:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 42e6a302ad95afc27e5b5d2ce0573777 SHA-1: e0111475b0dbee34f40990e28b9fa746eedbafb3 SHA-256: b90440574f1c7df627d5919bc5c4cfc0fc761a736d537e3ce12f10402e638bdd
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.cc/pify?keyword=arya+movie+songs++naa+songs+telugu'. This indicates the document's primary purpose is to redirect the user to malicious infrastructure. The presence of a PDF link farm heuristic further suggests a tactic to distribute malicious content or engage in SEO poisoning. No scripts were extracted, but the malicious redirector is a strong indicator of a phishing or malware distribution attempt.

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=arya+movie+songs++naa+songs+telugu
    • http://files.lexcoffeecottage.com/uploads/1/3/0/8/130874533/ebbd88878ee1.pdf
    • http://turegu.refugejc.com/uploads/1/3/1/1/131164250/82dc4a92.pdf
    • https://cdn.shopify.com/s/files/1/0439/4686/8891/files/65562098192.pdf
    • https://cdn.shopify.com/s/files/1/0441/0828/4056/files/bolabebipewepurovida.pdf
    • https://cdn.shopify.com/s/files/1/0431/2976/6039/files/baxiwonirosowibe.pdf
    • https://cdn.shopify.com/s/files/1/0431/9684/2142/files/40137472181.pdf
    • https://cdn.shopify.com/s/files/1/0428/0313/4627/files/mexaditiropabudi.pdf
    • https://cdn.shopify.com/s/files/1/0440/5608/4630/files/56579963.pdf
    • https://cdn.shopify.com/s/files/1/0430/9703/0817/files/26481970571.pdf
    • https://cdn.shopify.com/s/files/1/0432/8043/3302/files/dictionary_of_political_science_terms.pdf
    • https://cdn.shopify.com/s/files/1/0432/9606/3652/files/swot_analysis_marketing_plan.pdf
    • https://cdn.shopify.com/s/files/1/0430/1943/6185/files/2_afbeeldingen_samenvoegen.pdf
    • https://cdn.shopify.com/s/files/1/0431/6784/2465/files/vowutarisimejuluw.pdf
    • https://cdn.shopify.com/s/files/1/0430/8526/7097/files/kubifanuzoj.pdf
    • https://cdn.shopify.com/s/files/1/0429/9420/4825/files/tixajoj.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_off00004db8.bin
2b0dbfd8adc734b8e93f0c7b0bd2c8196e1a9961a25b1af454aacbbe71f31c2b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4DB8 5156 bytes
font_01_sfnt_off00005f3c.bin
6fe6e722d7264050ca9a9d250d44d9ccb6350b95abcdc3850a4aab605acd7137		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5F3C 9816 bytes

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