Malicious PDF — malware analysis report

Static analysis result for SHA-256 14e03c987747c28b…

MALICIOUS

PDF

70.8 KB Created: 2020-08-03 18:49:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6bdfe1445bc41a742f6816e184c3be5d SHA-1: 90d5bb359c17cbc60b20dd5f8b59ed2f1884d96c SHA-256: 14e03c987747c28b31bf19640afacfe6aaece911a883f4ac136095397e6fb9c2
154 Risk Score

Malware Insights

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

The PDF contains embedded links that redirect to malicious infrastructure, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The ML classifier also strongly flagged this PDF as malicious. The document body, though partially obfuscated, contains a URL that appears to be the primary lure, suggesting an attempt to redirect users to a malicious site for further exploitation.

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.cc/pify?keyword=technical+analysis+in+the+foreign+exchange+market+pdf
    • http://files.steffenhurka.com/uploads/1/3/2/7/132740628/eec6b90259.pdf
    • http://files.northeastchristiancollege.com/uploads/1/3/2/7/132740250/ralarumekaxigu_kevibazo.pdf
    • http://files.resurrectionmuseum.com/uploads/1/3/1/4/131453429/robovojan-wipedogemigus.pdf
    • http://files.furnacefallsfarm.com/uploads/1/3/2/7/132740371/1092165.pdf
    • http://files.mirabaipeart.com/uploads/1/3/1/4/131483275/10c3a21f8478984.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0430/1327/5811/files/18931792398.pdf
    • https://cdn.shopify.com/s/files/1/0430/3713/0914/files/32960093094.pdf
    • https://cdn.shopify.com/s/files/1/0432/4560/0936/files/tafarejazubegemewibe.pdf
    • https://cdn.shopify.com/s/files/1/0432/8262/8766/files/26499704914.pdf
    • https://cdn.shopify.com/s/files/1/0429/9295/9642/files/20452119336.pdf
    • https://cdn.shopify.com/s/files/1/0434/5095/7991/files/jetawawagixupon.pdf
    • https://cdn.shopify.com/s/files/1/0430/9227/9460/files/7646169573.pdf
    • https://cdn.shopify.com/s/files/1/0431/1059/6765/files/xalosu.pdf
    • https://cdn.shopify.com/s/files/1/0434/5082/6919/files/92596299524.pdf
    • https://cdn.shopify.com/s/files/1/0437/5294/7863/files/wakuwijozomimoxidowufe.pdf
    • https://cdn.shopify.com/s/files/1/0428/2191/0687/files/73013639530.pdf
    • https://cdn.shopify.com/s/files/1/0434/6406/5174/files/kadonuzema.pdf
    • https://cdn.shopify.com/s/files/1/0432/6991/4782/files/13804382200.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_off0000c886.bin
f90bd8c62fbeb4abfea07aed72d90c95b1ff61d6c46bf91e18f0bacee0afd478		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC886 5540 bytes
font_01_sfnt_off0000db36.bin
a7623ee95222c8f366331835e77379ff0c70459ee537d2052fc11e1a8a512833		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDB36 10792 bytes
font_02_sfnt_off0000ff51.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFF51 4324 bytes

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