Malicious PDF — malware analysis report

Static analysis result for SHA-256 eee3db5054363d45…

MALICIOUS

PDF

58.5 KB Created: 2020-08-30 04:01:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 07a096b40b04cb4cfe62bfb628c456e5 SHA-1: dea48dea3f4f39d9f055ca073725c34a9ecc1186 SHA-256: eee3db5054363d45bc81056def6aabe53ffc5f69623c5baf3f7ebbed12b3b32e
152 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 'https://ttraff.com/wix?keyword=reponse+a+1+sa+apres+intervention'. This URL is likely used to redirect the user to a malicious site for phishing or malware download. The document body, though heavily obfuscated, contains text fragments and URLs that reinforce this malicious intent. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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=reponse+a+1+sa+apres+intervention
    • https://static.usrfiles.com/ugd/b8c837_8b8174a0f62d4c7d876a8ac847d94138.pdf
    • https://static.usrfiles.com/ugd/b8c837_dc86ab8a4433493baa4009303d39af6d.pdf
    • https://static.usrfiles.com/ugd/73f3b0_da21c112c55c43d59e3c44ab0c009fda.pdf
    • https://static.usrfiles.com/ugd/0286dd_bdd6bf52077d4a6aaa10c43835eb523b.pdf
    • https://static.usrfiles.com/ugd/01bc73_9c0d688a66f94ab58e314bad7e07edd3.pdf
    • https://static.usrfiles.com/ugd/e6092c_6f918cf23df34c71aa37fd55fea4b3af.pdf
    • https://static.usrfiles.com/ugd/b8c837_baae0ff5563447b0846508726b71a5b3.pdf
    • https://static.usrfiles.com/ugd/b8c837_b012b1bd8bbb4e509d7b0874d4704213.pdf
    • https://static.usrfiles.com/ugd/b8c837_1ab2000b8d6042e19db345e48f2bcbda.pdf
    • https://static.usrfiles.com/ugd/9ec29b_eab5733c67a7416185e551e37dd60982.pdf
    • https://static.usrfiles.com/ugd/7e0eb0_0d050c474d234fe1aabf25e93918dd81.pdf
    • https://cdn.shopify.com/s/files/1/0444/4412/3303/files/animaciones_en_flash.pdf
    • https://cdn.shopify.com/s/files/1/0437/0015/8629/files/92543447768.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_off0000a2f1.bin
52b1aeb031f1154113567fabebc3f325a31e71d873a3cf8fb5e96793767e7623
pdf-font-stream PDF embedded font (sfnt) at offset 0xA2F1 4900 bytes
font_01_sfnt_off0000b3bb.bin
d29b29d5d405f8b6a0da6325f285d9aedffd5de04464f81993a3eecc17176601
pdf-font-stream PDF embedded font (sfnt) at offset 0xB3BB 12744 bytes