Malicious PDF — malware analysis report

Static analysis result for SHA-256 d2fec823a0c10690…

MALICIOUS

PDF

44.0 KB Created: 2020-08-14 11:56:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8a888db8fa3783f9b20f50c90b14b911 SHA-1: aeaf259e5a3fdf424542102fed19a6bbc45b76fa SHA-256: d2fec823a0c10690547e1099143ed76bc8399e23836ec80f0a28a7b224ab680e
128 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. Additionally, it exhibits a PDF link farm heuristic, with numerous links hosted on 'cdn.shopify.com'. The document body, though heavily obfuscated, contains the same malicious URL. This suggests a phishing or redirection attack designed to lead users to malicious content.

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.com/pify?keyword=appserv+win32+2.+5+8
    • http://files.bayouthrows.com/uploads/1/3/0/7/130740429/dozafogivefu.pdf
    • http://files.inspiredmusic.us/uploads/1/3/0/9/130969454/da2e4f.pdf
    • http://files.weswimrun.org/uploads/1/3/1/3/131380308/rekusirovaju.pdf
    • http://files.klarahomes.co.uk/uploads/1/3/1/6/131607075/32461b1e1c4fd0.pdf
    • http://pinabag.dasmith.ca/uploads/1/3/1/8/131856570/nonok_dufidowajenap_batavemeti.pdf
    • http://files.weswimrun.org/uploads/1/3/1/3/1313803
    • https://cdn.shopify.com/s/files/1/0429/6392/7206/files/15133360807.pdf
    • https://cdn.shopify.com/s/files/1/0429/7913/1551/files/29013659394.pdf
    • https://cdn.shopify.com/s/files/1/0430/3850/7169/files/pubipekojabubititisumu.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/bukidesokat.pdf
    • https://cdn.shopify.com/s/files/1/0430/7540/3936/files/56031559337.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/82595467958.pdf
    • https://cdn.shopify.com/s/files/1/0429/2640/7843/files/98217767675.pdf
    • https://cdn.shopify.com/s/files/1/0434/1615/8359/files/monipilinopejalareriw.pdf
    • https://cdn.shopify.com/s/files/1/0430/7881/1797/files/jimezunetemabuku.pdf
    • https://cdn.shopify.com/s/files/1/0427/7056/3239/files/36517862334.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_off00006bcd.bin
b463d2c7e622b690d83ce78ba959f7d0c47f99bfe702e32918d99fe2306f72cd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6BCD 5360 bytes
font_01_sfnt_off00007e35.bin
8a97a5a76b1e4c4e3d4c1714fc12b91bbdcfa6a13eeb144a06f41651c5673985		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7E35 10964 bytes

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