Malicious PDF — malware analysis report

Static analysis result for SHA-256 5e0a103a146b1b5b…

MALICIOUS

PDF

15.4 KB Created: 2019-05-05 08:52:35 +01:00 Authoring application: mPDF 5.7
MD5: 90e413af14ef3d8d781cd98f1784ba55 SHA-1: 6ad9e444b1d86fe17568e76afd5ef9737d7b8bb5 SHA-256: 5e0a103a146b1b5b4e3abdaae620e5f2810ad270353da7823f62f261fce31a18
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, identified as a link farm. While the document body is unreadable, the heuristic 'PDF_SEO_LINK_FARM' strongly suggests a malicious intent to manipulate search engine results or distribute malicious content through these links. The presence of embedded URLs and the ML classifier's high confidence score support this assessment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9778

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://loaminoo.linkpc.net/1099097093094094/They-Say-in-Harlan-County-An-Oral-History-by-Alessandro-Portelli.pdf
    • http://loaminoo.linkpc.net/1099097094095093/Which-Side-Are-You-On-The-Harlan-County-Coal-Miners-1931-39-by-John-W-Hevener.pdf
    • http://loaminoo.linkpc.net/2096098098090099/The-Battle-A-New-History-of-Waterloo-by-Alessandro-Barbero.pdf
    • http://loaminoo.linkpc.net/3095091096098092/Oral-History-by-Lee-Smith.pdf
    • http://loaminoo.linkpc.net/4094097098098094/A-Brief-History-of-Oral-Sex-by-David-Depierre.pdf
    • http://loaminoo.linkpc.net/2092099097091092/World-War-Z-An-Oral-History-of-the-Zombie-War-by-Max-Brooks.pdf
    • http://loaminoo.linkpc.net/3097091095099091/World-War-Z-An-Oral-History-of-the-Zombie-War-by-Max-Brooks.pdf
    • http://loaminoo.linkpc.net/4099096092096095/The-Replacements-All-Over-But-the-Shouting-An-Oral-History-by-Jim-Walsh.pdf
    • http://loaminoo.linkpc.net/3090097092092092/Tower-Stories-An-Oral-History-of-9-11-by-Damon-DiMarco.pdf
    • http://loaminoo.linkpc.net/4094091096098096/Punk-Rock-An-Oral-History-by-John-Robb.pdf
    • http://loaminoo.linkpc.net/5091098096097096/Memoirs-of-the-Maelstrom-A-Senegalese-Oral-History-of-the-First-World-War-by-Joe-Lunn.pdf
    • http://loaminoo.linkpc.net/4091098099092/Please-Kill-Me-The-Uncensored-Oral-History-of-Punk-by-Legs-McNeil.pdf
    • http://loaminoo.linkpc.net/5090098099090096/Oral-History-Off-the-Record-Toward-an-Ethnography-of-Practice-by-Anna-Sheftel.pdf
    • http://loaminoo.linkpc.net/2097092091096096/Slimed-An-Oral-History-of-Nickelodeon-s-Golden-Age-by-Mathew-Klickstein.pdf
    • http://loaminoo.linkpc.net/2099099091093095/Harlan-s-Race-Harlan-s-Story-2-by-Patricia-Nell-Warren.pdf
    • http://loaminoo.linkpc.net/1098095094094099/Bloods-An-Oral-History-of-the-Vietnam-War-by-Black-Veterans-by-Wallace-Terry.pdf
    • http://loaminoo.linkpc.net/2097096096093094/Unlocked-An-Oral-History-of-Haden-s-Syndrome-Lock-In-0-5-by-John-Scalzi.pdf
    • http://loaminoo.linkpc.net/6091098091093091/2084-An-Oral-History-of-the-Great-Warming-by-James-Lawrence-Powell.pdf
    • http://loaminoo.linkpc.net/1092092092098093/Hard-Times-An-Oral-History-of-the-Great-Depression-by-Studs-Terkel.pdf
    • http://loaminoo.linkpc.net/4090092092094090/Blood-of-Spain-An-Oral-History-of-the-Spanish-Civil-War-by-Ronald-Fraser.pdf

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