Malicious PDF — malware analysis report

Static analysis result for SHA-256 80928b1bd1f6d291…

MALICIOUS

PDF

37.5 KB Created: 2020-08-27 14:08:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bc7f4d103ace2261f9a0a38206f7888e SHA-1: 6ddf1cb780cc159293ce8804ebf4d65e8ded0d1a SHA-256: 80928b1bd1f6d291ef00a4a92ea4fee87171449e12a4abda36957ca0485fbabd
150 Risk Score

Malware Insights

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

The PDF file was flagged by multiple critical heuristics for containing malicious redirector links and a large number of external links, suggesting a link farm for a scam or phishing operation. The primary malicious URL identified is ttraff.com, which redirects to content related to adult material. The document body contains obfuscated text and the malicious URL, further supporting this assessment.

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.com/pify?keyword=amc%25C4%25B1k+porno+%25C3%25BCcretsiz
    • http://files.oralsurgerygroupinc.com/uploads/1/3/1/4/131453494/4473462.pdf
    • http://zokalan.crispandsmooth.com/uploads/1/3/1/4/131437237/vofipetojamekol_laguxubidesuk_pelejexale_zokajexazafetas.pdf
    • http://files.hungrybeargrazing.com/uploads/1/3/0/7/130776503/2ca9b3e1bd.pdf
    • https://cdn.shopify.com/s/files/1/0430/9375/4009/files/vevofanotaxozegeximofej.pdf
    • https://cdn.shopify.com/s/files/1/0438/1681/2706/files/2608359901.pdf
    • https://cdn.shopify.com/s/files/1/0430/1750/2869/files/duxuzalurefodazu.pdf
    • https://cdn.shopify.com/s/files/1/0434/5911/7206/files/lynne_graham_uploady.pdf
    • https://cdn.shopify.com/s/files/1/0430/1458/6517/files/jawexuxafufexob.pdf
    • https://cdn.shopify.com/s/files/1/0428/4373/4172/files/dezegonubil.pdf
    • https://cdn.shopify.com/s/files/1/0434/0590/1991/files/fewarumanomosilosaritu.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/65233410578.pdf
    • https://cdn.shopify.com/s/files/1/0430/7006/2754/files/pewedunozatibepiravuroko.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_off0000487f.bin
0a1d9bea602cf8d432066a2848cccf8bcd1cd9f8690385d44cac1b9f7f2abd34		 pdf-font-stream PDF embedded font (sfnt) at offset 0x487F 5092 bytes
font_01_sfnt_off00005995.bin
038382475b10f9b6d86b5f2f5c6f30375aacef47b6ebe40cd3237bf85c4c58db		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5995 15880 bytes

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