Malicious PDF — malware analysis report

Static analysis result for SHA-256 810e6ed130fd2cdf…

MALICIOUS

PDF

57.9 KB Created: 2020-08-23 13:48:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b1b0982e2788d9a9b869a46cee407de6 SHA-1: 7e6b1409e466fd8a3a354cc279863898a900ffe5 SHA-256: 810e6ed130fd2cdf415fcd81a7179acd4e70bd6d71abeca3b15f2f399de60006
150 Risk Score

Malware Insights

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

The PDF contains a mass of external links, many of which point to a redirector service. The primary malicious URL identified is https://ttraff.cc/pify?keyword=adobe+photoshop+elements+10++free, which is designed to lure users into downloading potentially unwanted software. The document body, though heavily obfuscated, contains references to the lure and the redirector URL.

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.cc/pify?keyword=adobe+photoshop+elements+10++free
    • http://files.pbfishandgame.com/uploads/1/3/1/6/131637814/gexubosun-kisinugerexo-zipir.pdf
    • http://dijox.singingsawpress.com/uploads/1/3/0/8/130874482/328144.pdf
    • http://nunawosaj.inhcc.net/uploads/1/3/0/7/130738647/5305438.pdf
    • http://nuzodape.jjohnsonartist.com/uploads/1/3/1/6/131606295/cd7dd.pdf
    • http://nisez.carolinesteiermcclintic.com/uploads/1/3/1/3/131379730/cdd3bfc.pdf
    • https://cdn.shopify.com/s/files/1/0431/1236/6241/files/lejazine.pdf
    • https://cdn.shopify.com/s/files/1/0432/8721/6293/files/36124492541.pdf
    • https://cdn.shopify.com/s/files/1/0434/6501/5460/files/defopuwalikazefasivelap.pdf
    • https://cdn.shopify.com/s/files/1/0428/3337/9487/files/hiragana_words_practice_sheets.pdf
    • https://cdn.shopify.com/s/files/1/0438/5865/7430/files/jetufuxumidabe.pdf
    • https://cdn.shopify.com/s/files/1/0432/4130/8320/files/86577419365.pdf
    • https://cdn.shopify.com/s/files/1/0435/4660/7784/files/wibogigujofemakujunaji.pdf
    • https://cdn.shopify.com/s/files/1/0430/6262/4405/files/10373390010.pdf
    • https://cdn.shopify.com/s/files/1/0431/9143/5422/files/67062179611.pdf
    • https://cdn.shopify.com/s/files/1/0431/9805/4558/files/viwinirarixokulenawofiz.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000095bd.bin
c167ce3a751e5b6d64996317d1a6340bc6c0f9b88c213e8af76dcb44e98ee200		 pdf-font-stream PDF embedded font (sfnt) at offset 0x95BD 5136 bytes
font_01_sfnt_off0000a70b.bin
b7ea163c3392c107c2eb4b7b41a5c9beb58c228a2f2162e56d3a136c3ff680ac		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA70B 10852 bytes
font_02_sfnt_off0000cc1d.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCC1D 4324 bytes

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