Malicious PDF — malware analysis report

Static analysis result for SHA-256 a9b4d8fb58a149f4…

MALICIOUS

PDF

41.8 KB Created: 2020-08-31 08:32:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c022c3f5dab28bd7cbed27bcdb63c512 SHA-1: f24022647e0c46c2eed9a3c37f602923ded72566 SHA-256: a9b4d8fb58a149f4cadc37c0c0f27462403e839364f078417b6c6918899de1ff
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. This indicates the document's primary purpose is to redirect users to potentially harmful websites. The document body itself contains text related to 'Orações subordinadas adverbiais', likely a lure to make the PDF appear legitimate. No scripts were extracted from this sample.

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/wix?keyword=ora%25C3%25A7%25C3%25B5es+subordinadas+adverbiais+exercicios+com+gabarito+9+ano
    • https://static.usrfiles.com/ugd/b8c837_49f50439a2954bceb8847135f482ab26.pdf
    • https://static.usrfiles.com/ugd/b7306e_6c9fbae5643941a3bc99e8914d7cd7b3.pdf
    • https://static.usrfiles.com/ugd/b8c837_17210462a724451698488763164e7bf8.pdf
    • https://static.usrfiles.com/ugd/405339_b00d8238eb854d46a75ebc2d9425ab2b.pdf
    • https://cdn.shopify.com/s/files/1/0435/8701/0715/files/bedujelaxasipo.pdf
    • https://cdn.shopify.com/s/files/1/0464/6597/4424/files/13871375021.pdf
    • https://cdn.shopify.com/s/files/1/0429/7628/0729/files/tejimeditunekoxikave.pdf
    • https://cdn.shopify.com/s/files/1/0437/6412/1752/files/14398455075.pdf
    • https://cdn.shopify.com/s/files/1/0430/3139/6501/files/calligrammes_poems_of_peace_and_war.pdf
    • https://cdn.shopify.com/s/files/1/0438/5007/2214/files/astm_standards.pdf
    • https://cdn.shopify.com/s/files/1/0434/5259/6374/files/35138570016.pdf
    • https://cdn.shopify.com/s/files/1/0432/9432/6942/files/34420872965.pdf
    • https://cdn.shopify.com/s/files/1/0430/0364/2007/files/joguxeretedupivuxur.pdf
    • https://cdn.shopify.com/s/files/1/0427/6033/9623/files/51197712334.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_off00005e39.bin
9935ff62015b7282a85784f6168fc4ae0fe8c8047c772d57f9ad8807aea064ff		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5E39 6076 bytes
font_01_sfnt_off0000724d.bin
ded3e3984c0d6ae14cbdcbb3edec10e1feeca746a231a484e6c1f09fd9275a95		 pdf-font-stream PDF embedded font (sfnt) at offset 0x724D 12216 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.