Malicious PDF — malware analysis report

Static analysis result for SHA-256 950448789e9d1077…

MALICIOUS

PDF

41.4 KB Created: 2020-07-22 06:50:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4e73d39a04179fee062a9d4afde2dce8 SHA-1: b4c7d6bf99592cd5bed6ea250f229a1323d08ca6 SHA-256: 950448789e9d1077e1bc856f7cd09a3ecba15b22bf61902ea4c1b0f85417a779
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.001 Malicious Link

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'ttraff.cc'. This indicates an attempt to direct the user to a malicious site. Additionally, another critical heuristic identifies a PDF link farm, suggesting a broad distribution effort. The document body, though heavily obfuscated, contains metadata related to PDF creation and potentially misleading text, reinforcing the lure. No scripts were extracted from this sample.

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/wb?keyword=introduction%20to%20aircraft%20structural%20analysis%20third%20edition%20pdf
    • http://files.rolesvillehsband.com/uploads/1/3/1/8/131856276/7420843.pdf
    • http://files.adelaidecms.org/uploads/1/3/0/7/130738631/b7ad0537b7e637.pdf
    • http://files.gumsaan.com/uploads/1/3/2/6/132681409/xokixuvuketawed-sosafolapedigel.pdf
    • http://files.madameburnett.com/uploads/1/3/0/7/130739037/mererexetonelej_kogoguvimejop_metakuwesojex_sijewalel.pdf
    • http://files.adelaidecms.org/uploads/1/3/0/7/130738631/b7ad0537b7
    • https://cdn.shopify.com/s/files/1/0432/5461/2123/files/funuvusotinepinorevo.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/juzopuzenafososokazulu.pdf
    • https://cdn.shopify.com/s/files/1/0431/2875/0241/files/muzotimebone.pdf
    • https://cdn.shopify.com/s/files/1/0434/0373/9294/files/gexomazidefurogum.pdf
    • https://cdn.shopify.com/s/files/1/0437/3748/1365/files/17135779427.pdf
    • https://fatevib.files.wordpress.com/2020/06/maduxifulamid.pdf
    • https://baxejubox.files.wordpress.com/2020/06/19787222008.pdf
    • https://lebijipezafu366428007.files.wordpress.com/2020/07/minafofikuniwerarudewexin.pdf
    • https://xezifemubet.files.wordpress.com/2020/06/duzinavusasuwa.pdf
    • https://cdn.shopify.com/s/files/1/0431/3664/7317/files/50228836404.pdf
    • https://cdn.shopify.com/s/files/1/0430/2821/8010/files/novizupudujivovuf.pdf
    • https://cdn.shopify.com/s/files/1/0431/0512/4516/files/lorelirosebezutapebivo.pdf
    • https://cdn.shopify.com/s/files/1/0433/4573/9941/files/lipelusiduzeb.pdf
    • https://cdn.shopify.com/s/files/1/0438/5911/6182/files/51357713029.pdf
    • https://cdn.shopify.com/s/files/1/0432/7460/0598/files/61460363626.pdf
    • https://cdn.shopify.com/s/files/1/0437/4790/1592/files/lasawopebogudisola.pdf
    • https://cdn.shopify.com/s/files/1/0433/9964/3286/files/31901153821.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_off0000653b.bin
6f9dafeccdd18255c342d40a9faa9f595498eee7551f44306f37c2560b3c043f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x653B 5164 bytes
font_01_sfnt_off000076c6.bin
617b327aa4058ec2b6dc1501d06def8e44fe14a7101c6566b28fef3a2c062532		 pdf-font-stream PDF embedded font (sfnt) at offset 0x76C6 9576 bytes

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