Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e70dc19105775bf…

MALICIOUS

PDF

50.1 KB Created: 2020-08-07 06:41:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6fb7b3ec4a19c37bf22e4055d838da95 SHA-1: c8afc162fd394c7fabcb0e2e726632a8563edb56 SHA-256: 4e70dc19105775bf167c46dc6ae50f1c030959dc04449c68675d1c359900d3eb
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing indicating it links to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains the text 'board game table plans pdf' and a URL pointing to 'ttraff.ru', which is flagged as malicious. This suggests the document is a lure to redirect users to malicious sites, likely for further exploitation or phishing. The presence of numerous other Shopify links, while individually benign, contributes to a link farm pattern.

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=board+game+table+plans+pdf
    • http://files.jgreermarketing.com/uploads/1/3/1/6/131636891/napaketizemenu-noropofage-gawenuvobafoju-notavaguw.pdf
    • http://files.breathepeaceyogi.com/uploads/1/3/1/4/131408415/6077138.pdf
    • http://kafimis.rabbipauljacobson.com/uploads/1/3/0/7/130776407/jidida.pdf
    • http://files.primitivequiltcellar.com/uploads/1/3/1/3/131379514/7654142.pdf
    • http://files.chankinsing.com/uploads/1/3/1/8/131857120/vubisijo_xulegujifurim_navavuvazazid.pdf
    • https://cdn.shopify.com/s/files/1/0436/2466/1154/files/gevedesadimokuwelizabuz.pdf
    • https://cdn.shopify.com/s/files/1/0435/4883/6004/files/luvoxigutiv.pdf
    • https://cdn.shopify.com/s/files/1/0431/5951/9394/files/jomavit.pdf
    • https://cdn.shopify.com/s/files/1/0433/6415/5560/files/fumaliruzomevo.pdf
    • https://cdn.shopify.com/s/files/1/0430/0223/2983/files/69437430183.pdf
    • https://cdn.shopify.com/s/files/1/0430/8910/0951/files/48337971146.pdf
    • https://cdn.shopify.com/s/files/1/0428/3065/9750/files/monoxedonibapupakokitewod.pdf
    • https://cdn.shopify.com/s/files/1/0429/1392/3228/files/mufamasovum.pdf
    • https://cdn.shopify.com/s/files/1/0434/6406/5174/files/judixugikuk.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/fixasitisajixumazurezeve.pdf
    • https://cdn.shopify.com/s/files/1/0432/8210/4478/files/92199681724.pdf
    • https://cdn.shopify.com/s/files/1/0429/2981/5705/files/12050659842.pdf
    • https://cdn.shopify.com/s/files/1/0440/0971/7910/files/wewagu.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000077a7.bin
b9ed637ad91dcf45bf93512bfea5e22e471f9243272672b5661b4eccf55478e9
pdf-font-stream PDF embedded font (sfnt) at offset 0x77A7 5288 bytes
font_01_sfnt_off00008980.bin
8d4be7cff6896688f71bde5d96451cc4faa34843898f19e8680d80fab7c6dc24
pdf-font-stream PDF embedded font (sfnt) at offset 0x8980 10612 bytes
font_02_sfnt_off0000ad8f.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3
pdf-font-stream PDF embedded font (sfnt) at offset 0xAD8F 4324 bytes