Malicious PDF — malware analysis report

Static analysis result for SHA-256 97742a2f85a339cb…

MALICIOUS

PDF

13.3 KB Created: 2019-11-09 23:35:36 +00:00 Authoring application: mPDF 5.7
MD5: 581fc255123d1a56e460dcdb1f8e1bdb SHA-1: abc00bdcc18e988da150cda9e24176c8ae189c24 SHA-256: 97742a2f85a339cb1e05a77670227db4c53cde45a05279baf88fc69c21478c69
60 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file exhibits a critical heuristic firing for a 'PDF_SEO_LINK_FARM', indicating a large number of embedded external links. The majority of these links point to the domain 'cefasfese.4pu.com' and appear to be structured for SEO purposes. While the individual linked PDFs are marked as benign, the sheer volume and structure suggest a malicious intent to manipulate search engine rankings or drive traffic. No scripts were extracted, and the document body was unreadable.

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/9736733733732732/Magic-Hatz-Tip-of-a-Hat-by-John-M-Adams.pdf
    • http://cefasfese.4pu.com/9736733733732734/Rock-Gods-of-Acht-by-Diane-Hatz.pdf
    • http://cefasfese.4pu.com/9736733734730732/Mit-Humor-durch-die-Lesestunde-Wo-verstecken-sich-der-Witz-und-die-Ironie-in-einer-Schulbibliothek-by-Waltraud-Calvi-Hatz.pdf
    • http://cefasfese.4pu.com/3733739730/Here-s-to-Us-by-Elin-Hilderbrand.pdf
    • http://cefasfese.4pu.com/1730737730738732733/Summer-of-69-by-Elin-Hilderbrand.pdf
    • http://cefasfese.4pu.com/3735733732732730/The-Castaways-by-Elin-Hilderbrand.pdf
    • http://cefasfese.4pu.com/5737737733/The-Identicals-by-Elin-Hilderbrand.pdf
    • http://cefasfese.4pu.com/4730739733731736/Barefoot-by-Elin-Hilderbrand.pdf
    • http://cefasfese.4pu.com/3731735738736736/On-a-Lee-Shore-by-Elin-Gregory.pdf
    • http://cefasfese.4pu.com/2737730730732730/The-Identicals-by-Elin-Hilderbrand.pdf
    • http://cefasfese.4pu.com/1733736730731734/Barefoot-by-Elin-Hilderbrand.pdf
    • http://cefasfese.4pu.com/4737738731733732/Alike-As-Two-Bees-by-Elin-Gregory.pdf
    • http://cefasfese.4pu.com/5738736734730731/La-le-on-de-surf-by-Elin-Hilderbrand.pdf
    • http://cefasfese.4pu.com/8731737737/The-Perfect-Couple-by-Elin-Hilderbrand.pdf
    • http://cefasfese.4pu.com/1738736737733736/Silver-Girl-by-Elin-Hilderbrand.pdf
    • http://cefasfese.4pu.com/2731736733735733/The-Blue-Bistro-by-Elin-Hilderbrand.pdf
    • http://cefasfese.4pu.com/2730734731732735/The-Warrior-Men-of-the-North-5-by-Elin-Peer.pdf
    • http://cefasfese.4pu.com/1736738734737736/Summer-People-by-Elin-Hilderbrand.pdf
    • http://cefasfese.4pu.com/2738737731731738/The-Perfect-Couple-by-Elin-Hilderbrand.pdf
    • http://cefasfese.4pu.com/1731731730734735736/Elin-s-Amerika-by-Marguerite-de-Angeli.pdf
    • http://cefasfese.4pu.com/4737738731733732/Alike-As-Two-Be

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