Malicious PDF — malware analysis report

Static analysis result for SHA-256 96955e9c36c490fb…

MALICIOUS

PDF

56.4 KB Created: 2020-08-19 11:19:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 06f6aac7cbc993fe600723546402ef93 SHA-1: 539eadfd1a9baf7349bbf51beb227bfd001ab3d1 SHA-256: 96955e9c36c490fba6aaf6b125bbdb9688b446ee22d65e611e9c283d1d7aafcd
150 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.ru, which is disguised as a Minecraft animation maker. The file also contains a large number of embedded links, many pointing to Shopify domains, suggesting a link farm or SEO poisoning tactic. The ML classifier strongly flagged this PDF as malicious. The primary attack vector appears to be social engineering via a deceptive document title and a malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.ru/pify?keyword=minecraft+animation+maker+free+no
    • http://files.loudlibertarian.com/uploads/1/3/1/4/131483830/kopot.pdf
    • http://files.napervillebedbugs.com/uploads/1/3/2/8/132814086/2d870.pdf
    • http://files.loudlibert
    • https://cdn.shopify.com/s/files/1/0433/9620/2661/files/alginac_bula_anvisa.pdf
    • https://cdn.shopify.com/s/files/1/0429/5173/7498/files/2014_chevrolet_equinox_lt_owners_manual.pdf
    • https://cdn.shopify.com/s/files/1/0437/6153/3085/files/just_2_words_answers_276.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/nubizasijimowedemo.pdf
    • https://cdn.shopify.com/s/files/1/0433/2371/9845/files/78565149210.pdf
    • https://cdn.shopify.com/s/files/1/0433/8404/5719/files/panduan_belajar_bahasa_mandarin_untuk_pemula.pdf
    • https://cdn.shopify.com/s/files/1/0429/0543/6326/files/zovepi.pdf
    • https://cdn.shopify.com/s/files/1/0432/7545/2569/files/60814617333.pdf
    • https://cdn.shopify.com/s/files/1/0434/7107/7542/files/dutesegumafoj.pdf
    • https://cdn.shopify.com/s/files/1/0432/7420/7387/files/15701346605.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_off00009f9e.bin
6de4dee0fc4e73b3fe37eb30a6e3778b5d5200addc9600d05a9f4e94cddf5b26		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9F9E 4888 bytes
font_01_sfnt_off0000b02b.bin
c11880f2f45bd0e7ee867c32516e54864a5ed082e2577ef1c3eac548c3f784c6		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB02B 10668 bytes

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