Malicious PDF — malware analysis report

Static analysis result for SHA-256 6dbdcf38faf07823…

MALICIOUS

PDF

66.4 KB Created: 2020-08-10 00:05:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4b64e639d37ff447c13281ab34dd0620 SHA-1: 119e810ab6a834d4437cb181155a4904c8f9ed86 SHA-256: 6dbdcf38faf07823c8a09f20518cf2d12e023b9f1344582fb8f36676fc7e250d
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous embedded links, many pointing to external PDF files, suggesting a link farm or SEO manipulation tactic. One prominent URL, 'https://ttraff.com/pify?keyword=the+satanic+bible+pdf+download+free', is flagged as a malicious redirector, indicating an attempt to lead the user to harmful content. The document body, though partially corrupted, contains keywords related to the lure and the malicious URL.

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/pify?keyword=the+satanic+bible+pdf+download+free
    • http://wewofun.riddledwithdreams.com/uploads/1/3/0/9/130969060/bipiraluw.pdf
    • http://files.biblecodesrevealed.com/uploads/1/3/2/8/132814050/lubebasu.pdf
    • http://files.neattucks.com/uploads/1/3/2/6/132682142/4024575.pdf
    • http://rekutig.stayprotected.org/uploads/1/3/1/3/131383483/kefuzolela.pdf
    • http://files.mrbuttsushistory.com/uploads/1/3/0/7/130739232/189207833ddad8.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0440/0925/9158/files/41342223475.pdf
    • https://cdn.shopify.com/s/files/1/0431/5263/8116/files/99859216708.pdf
    • https://cdn.shopify.com/s/files/1/0429/8627/4977/files/nubegagutuborapemomo.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/liwisubusamepumiv.pdf
    • https://cdn.shopify.com/s/files/1/0433/7329/7822/files/25821760682.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/buxidumex.pdf
    • https://cdn.shopify.com/s/files/1/0429/6392/7206/files/2008_saturn_vue_repair_manual_free.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/90067119925.pdf
    • https://cdn.shopify.com/s/files/1/0433/5176/9247/files/gibav.pdf
    • https://cdn.shopify.com/s/files/1/0437/7369/0017/files/mozupiketumelepojenim.pdf
    • https://cdn.shopify.com/s/files/1/0446/7389/2515/files/application_of_geometric_mean.pdf
    • https://cdn.shopify.com/s/files/1/0431/9461/3924/files/rupunufujosotolixed.pdf
    • https://cdn.shopify.com/s/files/1/0430/4168/5665/files/dulekabulisopokexifebiza.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_off0000c543.bin
1a2a7a777c788b1494c0e95e929667eeafb139f0add70877d22ea076dfc99805		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC543 5424 bytes
font_01_sfnt_off0000d7b5.bin
6ad1e8c6c0cae9fe8cfffad9e17b572c53be0f643b5e65c404590edec8f6cdab		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD7B5 10544 bytes

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