Malicious PDF — malware analysis report

Static analysis result for SHA-256 972e19c8b2510ead…

MALICIOUS

PDF

40.5 KB Created: 2020-08-27 18:30:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 66e64e59932cc2875e49509d503340dc SHA-1: a358ea2e9b4276e7693157ba32c5e2851389952f SHA-256: 972e19c8b2510ead7f3c3851e2df2c8ac6352886dcc38182d470aa6377d9d449
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to external PDF files hosted on various domains, including a known malicious redirector. This indicates a link farm or SEO poisoning attack designed to drive traffic to malicious infrastructure. The primary malicious URL identified is https://ttraff.cc/pify?keyword=statique+des+solides+exercices+corri.

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=statique+des+solides+exercices+corri
    • http://files.matthewcooke.com/uploads/1/3/0/9/130969075/bubetojajumaw_ruzikidexokof_zutenupilukoji_zujarorir.pdf
    • http://januxasi.4th.mrslambsroom.com/uploads/1/3/2/6/132696030/botumurazozuvusus.pdf
    • http://gejoraga.smbfc.org/uploads/1/3/1/4/131483281/kuvumileparukejet.pdf
    • http://fujime.spudflower.ca/uploads/1/3/1/6/131606490/58db6f8086.pdf
    • http://files.paigeandbrittboutique.com/uploads/1/3/0/7/130776167/rotogifelerafedijalo.pdf
    • https://cdn.shopify.com/s/files/1/0427/9202/6271/files/aggression_and_violence_in_adolescence.pdf
    • https://cdn.shopify.com/s/files/1/0429/6772/8279/files/vozus.pdf
    • https://cdn.shopify.com/s/files/1/0433/9331/9068/files/gunim.pdf
    • https://cdn.shopify.com/s/files/1/0429/8362/0767/files/tillich_systematic_theology.pdf
    • https://cdn.shopify.com/s/files/1/0463/2500/6497/files/25164627336.pdf
    • https://cdn.shopify.com/s/files/1/0430/6403/3429/files/john_deere_x585.pdf
    • https://cdn.shopify.com/s/files/1/0435/5633/9861/files/gozezusuxizuzamilefiniwe.pdf
    • https://cdn.shopify.com/s/files/1/0432/6624/4766/files/best_ebook_reader_linux.pdf
    • https://cdn.shopify.com/s/files/1/0439/4477/1739/files/tifedo.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_off00005d78.bin
bf833586cca3790e54b6fbb9dcda173484b9aeeb0853cf14e4dbfbcf4ed8f1de		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D78 5232 bytes
font_01_sfnt_off00006f42.bin
846b843ab7228a36d64f628b216cf45ffccd9a6cbf04dd78869cfb6c86740d33		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F42 11524 bytes

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