Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ef2cd50936fc0a3…

MALICIOUS

PDF

39.8 KB Created: 2020-08-10 16:07:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7cfffcfe307e51bf5966b1e53d762151 SHA-1: 0fd0a39f7ca8a13487f7191530251d7db7c0bb21 SHA-256: 3ef2cd50936fc0a326e4aa79c5744dfbc1d9f5a2ebd0065cf1ddef93ab41e51b
120 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic identifying a link to a known malicious redirector. The document body, though partially corrupted, contains text related to downloading PDFs and includes the malicious URL. This suggests the PDF is designed to trick users into clicking the link, leading them to potentially harmful content.

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/pify?keyword=stay+hungry+stay+foolish+pdf+download
    • http://reguju.aztecroguefoodsllc.com/uploads/1/3/2/7/132740405/7a730961049cd.pdf
    • http://xebudujur.madisonwicbdoil.com/uploads/1/3/1/0/131070420/fd227cd13.pdf
    • http://files.sandrarutter.com/uploads/1/3/2/8/132815220/fivokaneviw-kigivuxuxowar.pdf
    • http://files.sewcreativestudio.ca/uploads/1/3/1/3/131398530/6d21aaa86371.pdf
    • https://cdn.shopify.com/s/files/1/0428/2885/7503/files/acrobat_x_pro_convert_to_word.pdf
    • https://cdn.shopify.com/s/files/1/0434/0544/3237/files/zedinipedalaz.pdf
    • https://cdn.shopify.com/s/files/1/0431/6954/6395/files/fetebavipameme.pdf
    • https://cdn.shopify.com/s/files/1/0429/8237/5577/files/lodaletuzewukofa.pdf
    • https://cdn.shopify.com/s/files/1/0432/2181/1362/files/997234806.pdf
    • https://cdn.shopify.com/s/files/1/0437/7824/4765/files/brown_bear_what_do_you_see_book.pdf
    • https://cdn.shopify.com/s/files/1/0433/7372/3800/files/35442896984.pdf
    • https://cdn.shopify.com/s/files/1/0431/3330/4981/files/1277566640.pdf
    • https://cdn.shopify.com/s/files/1/0432/8561/0651/files/abstract_algebra_rings.pdf
    • https://cdn.shopify.com/s/files/1/0431/0587/8170/files/ragavus.pdf
    • https://cdn.shopify.com/s/files/1/0430/7173/3917/files/6063631331.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/wugituvunajobi.pdf
    • https://cdn.shopify.com/s/files/1/0438/4840/1046/files/boundary_layer_thickness.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/9142282406.pdf
    • https://cdn.shopify.com/s/files/1/0431/0440/3613/files/zifex.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_off00005c92.bin
d62e3dc66b0da486d9f34d6267d504813213527c0a0caa341bc332ee97be4dfc
pdf-font-stream PDF embedded font (sfnt) at offset 0x5C92 5600 bytes
font_01_sfnt_off00006fa6.bin
80991ecec822db9dac6901ffc1a4aa33c7286e0a25b11a2e9abf7e684cec169e
pdf-font-stream PDF embedded font (sfnt) at offset 0x6FA6 9952 bytes