Malicious PDF — malware analysis report

Static analysis result for SHA-256 c0fd84f63efa8291…

MALICIOUS

PDF

41.0 KB Created: 2020-08-14 10:56:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f4f037fcdb902a2eb4f910a77aff2494 SHA-1: 6e7c0eb93011ef11c4a73a6459696fd69fff1996 SHA-256: c0fd84f63efa82917509425d4743cd9dd2841de061f2bc4ae97f285487160670
128 Risk Score

Malware Insights

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

The PDF file contains numerous links, many of which point to Shopify domains hosting seemingly benign PDFs, but one critical link redirects to 'ttraff.ru', a known malicious redirector. The document body also contains a call-to-action phrase, suggesting a lure to click the malicious link. The presence of a malicious redirector and a link farm indicates an attempt to drive traffic to malicious infrastructure, likely for further exploitation or phishing.

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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/wb?keyword=download%20septuagint%20pdf
    • http://files.warwyckitsresearch.com/uploads/1/3/0/9/130968947/wofosateloviwot-fedaku.pdf
    • http://files.heronheron.com/uploads/1/3/1/3/131379252/zalebub-mevulategukimix-fitazokimorose-tudum.pdf
    • http://files.harringtonbooks.net/uploads/1/3/2/7/132741764/0bd1109.pdf
    • http://files.kaseycummings.com/uploads/1/3/1/4/131411147/1978159.pdf
    • https://cdn.shopify.com/s/files/1/0435/0525/4566/files/mixed_present_tenses_exercises.pdf
    • https://cdn.shopify.com/s/files/1/0430/4715/7914/files/savufebugikedefarusesak.pdf
    • https://cdn.shopify.com/s/files/1/0429/4397/1484/files/asian_tigers_economic_development.pdf
    • https://cdn.shopify.com/s/files/1/0431/4782/1205/files/49344480426.pdf
    • https://cdn.shopify.com/s/files/1/0429/0704/1959/files/43342301992.pdf
    • https://cdn.shopify.com/s/files/1/0433/4754/2175/files/botomoju.pdf
    • https://cdn.shopify.com/s/files/1/0439/4424/7451/files/cuckoo_rice_cooker_manual_english.pdf
    • https://cdn.shopify.com/s/files/1/0435/3110/8504/files/22495813304.pdf
    • https://cdn.shopify.com/s/files/1/0451/4299/9194/files/classification_of_lipids_biochemistry.pdf
    • https://cdn.shopify.com/s/files/1/0430/3123/2674/files/medication_antidotes.pdf
    • https://cdn.shopify.com/s/files/1/0448/2092/2528/files/advantages_and_disadvantages_of_mixed_economic_system.pdf
    • https://cdn.shopify.com/s/files/1/0433/7631/2471/files/64161118917.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_off0000620e.bin
296dfdab0f216ed9ad8be14a1b1200955f74e84e75a95414fac837c295941c25
pdf-font-stream PDF embedded font (sfnt) at offset 0x620E 5204 bytes
font_01_sfnt_off000073f2.bin
191777016bde41a213ee2bac302b9e27f2b1d83decbe934ed7aec1ef11487e2a
pdf-font-stream PDF embedded font (sfnt) at offset 0x73F2 10272 bytes