Malicious PDF — malware analysis report

Static analysis result for SHA-256 434970522acbba55…

MALICIOUS

PDF

45.5 KB Created: 2020-08-03 00:18:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4ba6a4bffeb06a8d009cf2c0fbfbcba0 SHA-1: 03cdd6d336c2f5c38d5fdb6c19b60934d555d3ba SHA-256: 434970522acbba556521763aaa5fc469797d32421866b05984cb8da85b87e43f
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 Malicious Link T1059.001 PowerShell

The PDF file contains a large number of embedded links, identified as a 'PDF SEO Link Farm'. One of these links, 'https://ttraff.ru/pify?keyword=tinkers+construct+github', is flagged as a malicious redirector. The document body, though heavily obfuscated, contains references to URLs and appears to be a lure. No scripts were extracted, but the primary malicious activity observed is the redirection to a known malicious URL.

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=tinkers+construct+github
    • http://files.ubeucustomcreations.com/uploads/1/3/1/0/131070762/287628.pdf
    • http://files.creatingtheconditionsfortransformation.com/uploads/1/3/2/6/132683142/kumigene-migitabo.pdf
    • http://files.celebrityartbypam.com/uploads/1/3/1/6/131606672/kozezanibowowos_wowazetas_wisil_rusetazifiv.pdf
    • http://files.filipinocursillosf.org/uploads/1/3/1/3/131378990/sofalevabe.pdf
    • https://cdn.shopify.com/s/files/1/0432/6440/9755/files/52948612955.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/kufotiniponekurek.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xidab.pdf
    • https://cdn.shopify.com/s/files/1/0427/9749/8535/files/keturapavexureritexobudes.pdf
    • https://cdn.shopify.com/s/files/1/0437/9102/4277/files/5910064015.pdf
    • https://cdn.shopify.com/s/files/1/0432/1479/9012/files/69056083873.pdf
    • https://cdn.shopify.com/s/files/1/0430/4017/8333/files/rasedinizi.pdf
    • https://cdn.shopify.com/s/files/1/0440/3986/4485/files/wifana.pdf
    • https://cdn.shopify.com/s/files/1/0432/1309/5073/files/zojutela.pdf
    • https://cdn.shopify.com/s/files/1/0432/3760/5544/files/vuninopabu.pdf
    • https://cdn.shopify.com/s/files/1/0430/8343/2096/files/pimuzefitujatuni.pdf
    • https://cdn.shopify.com/s/files/1/0429/3266/6524/files/87556519796.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_off0000656c.bin
b43ac2569ba61d2d5a35470a8465d13f29b218e8b4c63a3010b1fed59618a360
pdf-font-stream PDF embedded font (sfnt) at offset 0x656C 4856 bytes
font_01_sfnt_off000075e4.bin
136625ad3d11f0daab51b1eabe552564615a0cd45bf4a491fbfba16e4a43d7df
pdf-font-stream PDF embedded font (sfnt) at offset 0x75E4 10960 bytes
font_02_sfnt_off00009b2f.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2
pdf-font-stream PDF embedded font (sfnt) at offset 0x9B2F 4324 bytes