Malicious PDF — malware analysis report

Static analysis result for SHA-256 783d60b53081089e…

MALICIOUS

PDF

14.5 KB Created: 2019-05-03 06:27:21 +01:00 Authoring application: mPDF 5.7
MD5: 932f5bb24147970f1e5d427da518581c SHA-1: 824c2ff4af7f3eaaba447ade32879b4d4ae346dc SHA-256: 783d60b53081089e04935d3ec4df26f8ccc3bbc016165959b2db757117f7049f
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links to external PDF files, a technique often used for SEO spam or to distribute further malicious content. While the specific content of the linked PDFs is benign, the sheer volume and the heuristic firing of 'PDF_SEO_LINK_FARM' indicate a malicious intent to manipulate search results or redirect users to potentially harmful sites. No scripts were extracted, but the PDF structure itself facilitated the link farm.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9798

Heuristics 2

  • 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.
  • 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 http://cefasfese.4pu.com/5737737730736737/Forbidden-Kisses-3-AM-Kisses-8-by-Addison-Moore.pdf
    • http://cefasfese.4pu.com/5737737730736738/Dirty-Kisses-3-AM-Kisses-9-by-Addison-Moore.pdf
    • http://cefasfese.4pu.com/3730738736736730/Sugar-Kisses-3-AM-Kisses-2-by-Addison-Moore.pdf
    • http://cefasfese.4pu.com/3731733739739733/Velvet-Kisses-3-AM-Kisses-5-by-Addison-Moore.pdf
    • http://cefasfese.4pu.com/1734734736732734/3-AM-Kisses-3-AM-Kisses-1-by-Addison-Moore.pdf
    • http://cefasfese.4pu.com/3739735735737730/Barefoot-Kisses-The-Kisses-Series-7-by-Krista-Lakes.pdf
    • http://cefasfese.4pu.com/4737735731730735/Rainwater-Kisses-The-Kisses-2-by-Krista-Lakes.pdf
    • http://cefasfese.4pu.com/4736732733737732/Kisses-From-Jack-The-Kisses-1-5-by-Krista-Lakes.pdf
    • http://cefasfese.4pu.com/2731731734730730/Christmas-Kisses-Winter-Kisses-1-by-H-M-Ward.pdf
    • http://cefasfese.4pu.com/4737735731730738/Freshwater-Kisses-The-Kisses-3-by-Krista-Lakes.pdf
    • http://cefasfese.4pu.com/3739733733739732/Wishful-Kisses-The-Kisses-4-5-by-Krista-Lakes.pdf
    • http://cefasfese.4pu.com/3730731734737737/Forbidden-Kisses-Blushing-Bay-1-by-Annie-Rains.pdf
    • http://cefasfese.4pu.com/4730735731733739/Poison-Kisses-Part-1-Poison-Kisses-1-by-Lisa-Renee-Jones.pdf
    • http://cefasfese.4pu.com/4731736736733/Vampire-Kisses-Blood-Relatives-Vol-1-Vampire-Kisses-Blood-Relatives-1-by-Ellen-Schreiber.pdf
    • http://cefasfese.4pu.com/4733731732738737/400-First-Kisses-First-1-by-E-L-Todd.pdf
    • http://cefasfese.4pu.com/5737737731732734/Lip-Kisses-by-Stella-Chaplin.pdf
    • http://cefasfese.4pu.com/4735731739739734/17-First-Kisses-by-Rachael-Allen.pdf
    • http://cefasfese.4pu.com/3738738737732734/Three-Kisses-by-Heath-Daniels.pdf
    • http://cefasfese.4pu.com/3736731734733/A-Thousand-Boy-Kisses-by-Tillie-Cole.pdf
    • http://cefasfese.4pu.com/2739736736736736/Killer-Kisses-by-Sharon-Buchbinder.pdf

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