Malicious PDF — malware analysis report

Static analysis result for SHA-256 f8ff4a9968c9b614…

MALICIOUS

PDF

38.5 KB Created: 2020-08-11 00:49:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 60b56579a58a9815a1ba95cdab40682b SHA-1: f1d8c1635100fd00fdcc4fb211bd20148f23702f SHA-256: f8ff4a9968c9b614c2aeb9fed3dddf8df49b1f7c363a456a81cbee51f7ac02c0
120 Risk Score

Malware Insights

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

The PDF contains a high number of embedded links, with a critical heuristic firing for a malicious redirector. The primary malicious URL identified is https://ttraff.cc/pify?keyword=coraline+the+graphic+novel+pdf+espa%25C3%25B1ol, which is likely used to redirect users to malicious content. The document body, though heavily corrupted, contains references to the target URL and other PDF files, suggesting a link farm or SEO poisoning tactic to distribute malicious 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=coraline+the+graphic+novel+pdf+espa%25C3%25B1ol
    • http://files.deerlakesbands.org/uploads/1/3/1/3/131379692/jitetexo.pdf
    • http://wegudom.ourbaptistheritage.org/uploads/1/3/1/3/131379833/2885433.pdf
    • http://files.nfca.ca/uploads/1/3/1/4/131483002/kogokotavov-mizirorisa.pdf
    • http://files.catcatblog.com/uploads/1/3/0/7/130739590/ramoretunadef-netokagoletugez-gopixifexevopap.pdf
    • http://files.franciscowan.com/uploads/1/3/0/7/130740571/cd252.pdf
    • https://cdn.shopify.com/s/files/1/0428/5209/0022/files/susexojonimupiparekalove.pdf
    • https://cdn.shopify.com/s/files/1/0432/3291/9720/files/kaplan_asvab_2020.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/gomejalubewetilukifij.pdf
    • https://cdn.shopify.com/s/files/1/0437/2761/8209/files/pdf_tool_merge_split_watermark_encrypt.pdf
    • https://cdn.shopify.com/s/files/1/0437/8371/7015/files/49563287245.pdf
    • https://cdn.shopify.com/s/files/1/0428/2246/7750/files/91846588004.pdf
    • https://cdn.shopify.com/s/files/1/0429/6055/2085/files/babeturinivorobimazuzaf.pdf
    • https://cdn.shopify.com/s/files/1/0433/8096/5534/files/mathematical_logic_and_boolean_algebra.pdf
    • https://cdn.shopify.com/s/files/1/0431/3235/4711/files/titrasi_argentometri_metode_volhard.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/balevogigadan.pdf
    • https://cdn.shopify.com/s/files/1/0430/8716/7645/files/acta_constitutiva_ejemplo_mexico.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_off000054a5.bin
32a718742dde1dc52121a8896b0bf908c7daf2b338bd4b2fd74a509fe484a7d2
pdf-font-stream PDF embedded font (sfnt) at offset 0x54A5 5592 bytes
font_01_sfnt_off00006769.bin
67988bad322660029946328bab2f247f4691153b021eb3b31eb068a7f23fcdff
pdf-font-stream PDF embedded font (sfnt) at offset 0x6769 10508 bytes