Malicious PDF — malware analysis report

Static analysis result for SHA-256 ce9e4f54f577451d…

MALICIOUS

PDF

38.3 KB Created: 2020-09-03 01:09:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 501719b96f755e58d11b986d5bb33297 SHA-1: 1289c502cde8253e21f5998d873166214b85e14a SHA-256: ce9e4f54f577451d4e3a17ae42f1252841ee8acae28ca9261cbef06472b9519e
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/wix?keyword=digital+photography+complete+course+pdf'. It also exhibits characteristics of a PDF link farm, with numerous embedded URLs, many hosted on cdn.shopify.com. The document body, though partially corrupted, contains text suggesting a lure related to a 'digital photography complete course pdf', which is likely intended to entice users to click the malicious link. No scripts were extracted, and the primary malicious activity observed is redirection to a known malicious domain.

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.cc/wix?keyword=digital+photography+complete+course+pdf
    • https://cdn.shopify.com/s/files/1/0429/5639/0559/files/baaghi_2_movie_hd_photos.pdf
    • https://cdn.shopify.com/s/files/1/0435/7187/1912/files/nopejowenib.pdf
    • https://cdn.shopify.com/s/files/1/0433/6025/6159/files/zevirafawatafasixa.pdf
    • https://static.usrfiles.com/ugd/fac845_3e37090acbd74b9f8bff257b427a4f09.pdf
    • https://static.usrfiles.com/ugd/58a813_5436f973015c4dd396a0c4a8f57ba388.pdf
    • https://static.usrfiles.com/ugd/d1d005_bfbcb0a3ac4a4b40a38ce7cc139990c4.pdf
    • https://cdn.shopify.com/s/files/1/0431/7003/7924/files/calendario_mensal_setembro_2020.pdf
    • https://cdn.shopify.com/s/files/1/0440/2541/3782/files/76734114176.pdf
    • https://cdn.shopify.com/s/files/1/0431/7678/8134/files/29146974281.pdf
    • https://cdn.shopify.com/s/files/1/0440/6162/2437/files/revimobexejijuwus.pdf
    • https://cdn.shopify.com/s/files/1/0433/0350/1989/files/arnold_render_settings.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_off00005526.bin
dfc9973bcdaeaadccc871f3f4fa1eaae7a17d6b2c967de6f4245882a980f8f18		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5526 5672 bytes
font_01_sfnt_off00006855.bin
09bb9d2b54e9e9f19a46b6993d553c05f92a53eb56e666cfda755906f4f86456		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6855 10112 bytes

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