Malicious PDF — malware analysis report

Static analysis result for SHA-256 868453ee2575b73a…

MALICIOUS

PDF

39.6 KB Created: 2020-08-10 06:08:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b0aab322a292d70555bfac22dd0bd998 SHA-1: 3adab437b4e9da97a7ba1ed2e6d830714b61f709 SHA-256: 868453ee2575b73aedd901503ac890e113c1bc03beb0331b757c09884eaf7a46
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 'https://ttraff.cc/pify?keyword=learn+russian+for+beginners+pdf'. This indicates the document's primary purpose is to redirect users to malicious infrastructure, likely for further exploitation or phishing. The presence of numerous other PDF links, many hosted on Shopify, suggests a link farm or SEO poisoning tactic to distribute the malicious redirector. No scripts were extracted from this sample.

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.cc/pify?keyword=learn+russian+for+beginners+pdf
    • http://files.nanopintechnologies.com/uploads/1/3/2/7/132710661/6808280.pdf
    • http://dovij.liamcknight.com/uploads/1/3/0/8/130814328/tiwetozevitaneledane.pdf
    • http://files.matchmypartytheme.com/uploads/1/3/0/7/130775651/rujezela_jawabar.pdf
    • https://cdn.shopify.com/s/files/1/0435/0004/4454/files/ramraksha_stotra.pdf
    • https://cdn.shopify.com/s/files/1/0427/9762/9596/files/reworulatolapapilerutiw.pdf
    • https://cdn.shopify.com/s/files/1/0429/9587/5989/files/kojugasi.pdf
    • https://cdn.shopify.com/s/files/1/0440/8049/6792/files/69228323104.pdf
    • https://cdn.shopify.com/s/files/1/0431/8078/5821/files/one_way_anova_spss_output_interpretation.pdf
    • https://cdn.shopify.com/s/files/1/0431/4903/3640/files/kawomafexuvegivin.pdf
    • https://cdn.shopify.com/s/files/1/0432/0290/4222/files/nikuxisiwilij.pdf
    • https://cdn.shopify.com/s/files/1/0432/0896/6307/files/mimagagoxazasesupa.pdf
    • https://cdn.shopify.com/s/files/1/0440/8338/0376/files/conjugaison_du_verbe_etre_et_avoir.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/kozaw.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/wulusiwebope.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_off00005d85.bin
8ad53ab4a51e2991bf14580e942a128aa26c345581e89544b5dbffb0a5fa3996
pdf-font-stream PDF embedded font (sfnt) at offset 0x5D85 5260 bytes
font_01_sfnt_off00006f71.bin
c4558e8b7f28eb74a01e517a5e500707a8c341b2c9007cd2cf06ca1227dc169f
pdf-font-stream PDF embedded font (sfnt) at offset 0x6F71 9980 bytes