Malicious PDF — malware analysis report

Static analysis result for SHA-256 6ed03c158793e927…

MALICIOUS

PDF

43.1 KB Created: 2020-09-08 15:44:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5ecd3b44b8d10457280f3f117eda42ad SHA-1: cfc46f8e3d7fe61821109092e09be5ad8754add9 SHA-256: 6ed03c158793e9270cd75f9ed7e07940440cde184c9eb6035c8c85dba02de6d3
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The sample is a PDF document that contains numerous embedded links, a common tactic for phishing or malware distribution. One of the embedded URLs, 'https://ttraff.link/wix?keyword=justice+reversed+tarot+guide', is flagged as a known malicious redirector. The PDF also contains a large number of external PDF links, suggesting a link farm, which is often used to manipulate search engine results or distribute malicious content.

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.link/wix?keyword=justice+reversed+tarot+guide
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0431/3759/7591/files/fazivobanoxezokefave.pdf
    • https://cdn.shopify.com/s/files/1/0440/7810/4728/files/2448117598.pdf
    • https://cdn.shopify.com/s/files/1/0440/2587/2549/files/59424852757.pdf
    • https://cdn.shopify.com/s/files/1/0429/8424/3351/files/wuxoja.pdf
    • https://cdn.shopify.com/s/files/1/0462/5789/7621/files/bluestacks_1_faster_2016.pdf
    • https://cdn.shopify.com/s/files/1/0431/5466/9729/files/bimetawufes.pdf
    • https://cdn.shopify.com/s/files/1/0437/3456/5025/files/attestation_d_hbergement_caf.pdf
    • https://cdn.shopify.com/s/files/1/0427/9864/5404/files/characteristics_of_transition_metals.pdf
    • https://static.usrfiles.com/ugd/12745a_6344a5890a904dab9d10c127ad0a6e7f.pdf
    • https://static.usrfiles.com/ugd/2f07a1_b1f2aa24a75442e9aaa621275fffbae1.pdf
    • https://cdn.shopify.com/s/files/1/0430/7451/9201/files/17304095150.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tanedikefiresemur.pdf
    • https://cdn.shopify.com/s/files/1/0434/3431/1845/files/57123808918.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005e36.bin
5a6c921ae3f0fc9afda88984d4b578be1c0959c08776c483eadc4931a4a3df57
pdf-font-stream PDF embedded font (sfnt) at offset 0x5E36 4900 bytes
font_01_sfnt_off00006ef0.bin
d9ea506401eb56ec52dd36736fbf0d55ee3d18f0899f8da37caad5d235a0cc7f
pdf-font-stream PDF embedded font (sfnt) at offset 0x6EF0 10252 bytes
font_02_sfnt_off000091b6.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333
pdf-font-stream PDF embedded font (sfnt) at offset 0x91B6 4324 bytes