Malicious PDF — malware analysis report

Static analysis result for SHA-256 10e5dea54f307a68…

MALICIOUS

PDF

65.5 KB Created: 2020-08-10 09:53:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4435aa5efbb7cfe81fb49250608f92f3 SHA-1: 3389c1e064eb4b51d8b7645558912e7d6b9c5f26 SHA-256: 10e5dea54f307a685c44136b5a7793a03cfc0020e777a87fb50a828923d23e28
194 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one specifically identified as a malicious redirector. The document body, though heavily garbled, contains a URL that matches the malicious redirector found by heuristics. This suggests the PDF is designed to trick users into visiting a malicious site, likely as part of a phishing or malware distribution scheme. No scripts were extracted, but the presence of a malicious redirector and the 'SE_PASSWORD_ARCHIVE_LURE' heuristic indicate a high likelihood of further malicious activity.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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.cc/pify?keyword=energias+renovables+espa%25C3%25B1a+pdf
    • http://lunip.kathleenstuartart.com/uploads/1/3/0/8/130874284/1528632.pdf
    • http://metifadol.marinashacola.com/uploads/1/3/2/8/132816202/finedowasobugafax.pdf
    • http://files.waydragon.com/uploads/1/3/2/6/132681625/1674929.pdf
    • http://files.zaidmoving.com/uploads/1/3/1/3/131398268/tazotojixexu.pdf
    • http://files.abbywendy.co.nz/uploads/1/3/1/3/131381605/tibamatejeji.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0440/6899/5237/files/wevaboboxifi.pdf
    • https://cdn.shopify.com/s/files/1/0430/6976/7842/files/vobakudeginimejom.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xopafomapezujiwowab.pdf
    • https://cdn.shopify.com/s/files/1/0435/5942/0063/files/adobe_reader_for_windows_7_32_bit_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0435/1829/6228/files/states_of_matter_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0430/0354/3715/files/22203734671.pdf
    • https://cdn.shopify.com/s/files/1/0432/4940/2016/files/34525485629.pdf
    • https://cdn.shopify.com/s/files/1/0428/5592/3878/files/62012801268.pdf
    • https://cdn.shopify.com/s/files/1/0427/5326/1724/files/voguzatafa.pdf
    • https://cdn.shopify.com/s/files/1/0440/9029/4437/files/rufafubisozaxonedet.pdf
    • https://cdn.shopify.com/s/files/1/0431/3546/7682/files/59895035655.pdf
    • https://cdn.shopify.com/s/files/1/0450/4174/6084/files/crop_production_business_plan_sample.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/94430640368.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_off0000bed5.bin
fa4991c3b976ecd0d38d2173f049f20824f79d7ebed68a2571067b06f801cbe8		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBED5 5576 bytes
font_01_sfnt_off0000d19d.bin
c3d2de1be73592e11a8ac95a5886e22187eaadf3eb7034b7e17e9915f9db8c41		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD19D 11328 bytes

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