Malicious PDF — malware analysis report

Static analysis result for SHA-256 eae869fdcc2f7d23…

MALICIOUS

PDF

47.2 KB Created: 2020-08-04 00:08:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7be5602f9b4ffed1abdcb08e1732a835 SHA-1: e7f75dbeb054e1eb5d977cd14c1912a3613a85b8 SHA-256: eae869fdcc2f7d236b1ba1b2872c244f83d92acd55c9c3a0734694c47211f420
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, with one identified as a malicious redirector. The primary malicious URL, https://ttraff.ru/pify?keyword=basic+english+conversation+questions+and+answers+pdf, is likely used to funnel users to a phishing or malware distribution site. The document body itself is largely unreadable, but the presence of the malicious redirector and the link farm heuristic strongly indicate a 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.ru/pify?keyword=basic+english+conversation+questions+and+answers+pdf
    • http://files.missouridairy.com/uploads/1/3/0/7/130776142/ziwavedato.pdf
    • http://files.gvscleaning.co.uk/uploads/1/3/0/7/130775735/d462dcfe60ee.pdf
    • http://files.ptplayers.com/uploads/1/3/0/8/130814106/ferilugix-bewenibipaga-mopitajagi-sabuxurul.pdf
    • http://files.hopehf.com/uploads/1/3/2/6/132681343/lejipebelijox.pdf
    • https://cdn.shopify.com/s/files/1/0437/9148/3042/files/install_xgboost_python.pdf
    • https://cdn.shopify.com/s/files/1/0434/5652/8537/files/wurefefamekonosup.pdf
    • https://cdn.shopify.com/s/files/1/0428/8266/2553/files/what_is_intel_proset_wireless_software.pdf
    • https://cdn.shopify.com/s/files/1/0432/4596/1383/files/93980961863.pdf
    • https://cdn.shopify.com/s/files/1/0434/6934/0822/files/70791285798.pdf
    • https://cdn.shopify.com/s/files/1/0433/6825/1543/files/31612527015.pdf
    • https://cdn.shopify.com/s/files/1/0431/6105/9482/files/vesaretibisexogumavanoko.pdf
    • https://cdn.shopify.com/s/files/1/0436/2724/9826/files/demon_slayer_osrs.pdf
    • https://cdn.shopify.com/s/files/1/0429/1470/9663/files/87556042921.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_off000077fa.bin
dcc703f6d6db2738e9a84d6a55619c54f56d0824409205542a05fff8b9105fc1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x77FA 5744 bytes
font_01_sfnt_off00008b89.bin
6a108fb31a4f2dfdc6490175b0cd7094b06f8ef376e60759dd4aa8c0c91e1f2d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8B89 10720 bytes

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