Malicious PDF — malware analysis report

Static analysis result for SHA-256 01c4e90d86f26989…

MALICIOUS

PDF

148.5 KB Created: 2020-08-08 07:38:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4707c697850c00120ea811cba50cfc76 SHA-1: 04cf69818ff90de54314f72262971c8272500f2c SHA-256: 01c4e90d86f26989b8b0615d5d97953f849206448c2d9d48cd196bc2f9dd8887
94 Risk Score

Malware Insights

MITRE ATT&CK
T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF contains a malicious redirector link pointing to 'https://ttraff.com/pify?keyword=bhaktamar+stotra+pdf'. This URL is flagged as malicious and is the primary indicator of the document's harmful intent. The ML classifier also strongly indicated maliciousness, supporting the conclusion that this PDF is designed to lead users to a harmful destination.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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.
  • 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/pify?keyword=bhaktamar+stotra+pdf
    • http://files.muniakfamily.com/uploads/1/3/1/4/131407183/3660174.pdf
    • http://files.thewheelcaravanpark.co.uk/uploads/1/3/0/7/130776077/joduwibakaxojutuwap.pdf
    • http://mowesudu.authenticatex.com/uploads/1/3/0/8/130815009/bukixemu.pdf
    • http://files.freelancergcc.com/uploads/1/3/1/1/131163859/zinix.pdf
    • http://files.sonsofitalycgc.org/uploads/1/3/1/4/131455158/nenokaj.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0431/3058/5239/files/pafajogenam.pdf
    • https://cdn.shopify.com/s/files/1/0431/6377/9240/files/13126361084.pdf
    • https://cdn.shopify.com/s/files/1/0440/5932/8662/files/wesuwigeline.pdf
    • https://cdn.shopify.com/s/files/1/0433/8758/4661/files/1707124353.pdf
    • https://cdn.shopify.com/s/files/1/0431/7567/4024/files/mawevijakifugoziwu.pdf
    • https://cdn.shopify.com/s/files/1/0434/1281/6034/files/pharmacotherapy_casebook_answers.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/puxatofutedixa.pdf
    • https://cdn.shopify.com/s/files/1/0431/7177/4615/files/iso_burner_windows_10.pdf
    • https://cdn.shopify.com/s/files/1/0431/2819/3184/files/jirajaviwamefaxekudufu.pdf
    • https://cdn.shopify.com/s/files/1/0448/0362/1025/files/budget_approaches.pdf
    • https://cdn.shopify.com/s/files/1/0440/7299/2918/files/74325362388.pdf
    • https://cdn.shopify.com/s/files/1/0431/0279/7986/files/zepogikiviwafaraz.pdf
    • https://cdn.shopify.com/s/files/1/0436/2531/6514/files/87776626541.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0002102b.bin
f2116e36f39491568d1a470373d5f98a4c4d79960e4929f68c0ff467f5840817
pdf-font-stream PDF embedded font (sfnt) at offset 0x2102B 5360 bytes
font_01_sfnt_off00022241.bin
1075d81968566d9a233f97df5e0a47fc66e4702987b9586b34b56e16288bc531
pdf-font-stream PDF embedded font (sfnt) at offset 0x22241 10460 bytes